Short answer: reviews on Google, Allegro, and Booking are a useful signal, but not proof. The most reliable reviews are those tied to a real transaction or stay, and the least reliable are those any user can add without confirming they used the service. You can trust them more by reading average and recent reviews, looking for specific details, and comparing several platforms. Below we show how each platform polices reviews, how the market for fake reviews works, and how to judge in 5 minutes whether a rating can be believed.
Are reviews on Google, Allegro, and Booking reliable? Rules of trust
An online review is only as reliable as the mechanism that accepts it. So you need to ask three questions: who can add it, whether the platform checks that the author actually used the service, and what it does with suspicious entries. The answers determine whether the stars are a good guide or part of an advertisement.
- Trust more when a review can only be added after a purchase or stay, and when the platform publishes both praise and criticism.
- Trust less when reviews are anonymous, with no trace of a transaction, and the business itself controls how they are displayed.
- Never treat the average rating alone as proof. What matters is the content of the reviews, how they are spread over time, and how consistent they are across platforms.
What the law says: the Omnibus Directive and UOKiK
Since January 1, 2023, Poland has had rules in force stemming from the Omnibus Directive. According to an overview by PARP, a business that makes consumer reviews available must state whether and how it ensures that they come from people who actually used or bought the product. Posting or commissioning fake reviews is prohibited, as is distorting genuine ones, for example by publishing only positive reviews and removing negative ones. The rules also apply to platforms, comparison sites, and marketing agencies.
In practice, this means that a store or booking site that boasts of “customer reviews” should be able to explain where they come from and how they are checked. It’s worth looking for this information in the terms of service, in the footer, or under the reviews.
Google, Allegro, and Booking: how each platform polices reviews
| Platform | Who can review | What the platform does | Weak point |
|---|---|---|---|
| Google (Maps) | Users describing places and businesses. Reviews are about the location, not a specific transaction, so they are harder to link to a purchase. | Algorithms and machine learning remove content that breaks the rules. In 2024, more than 240 million such reviews and more than 12 million fake business profiles were blocked or removed (Google data). | Reviews with no trace of a purchase. The market for paid ratings is concentrated precisely on Maps (the Best-Review case). |
| Allegro | Product reviews are written by customers, and only people who bought something on Allegro in the last 12 months can rate their usefulness (a change from 2023). | The limit was introduced to curb accounts created to inflate ratings. Since April 15, 2024, the “thumbs down” on reviews has been removed; the “thumbs up” and reporting of violations remain. | No way to rate a review negatively. Don’t read product reviews as reviews of a particular seller. |
| Booking | According to Hostaway’s description: guests who booked through Booking and/or stayed at the property, within 3 months of checking out. | It publishes positive and negative reviews; exceptions include fake content, spam, and personal data. A property cannot remove a negative review itself, except in narrow cases (e.g. a review of a different property). Reviews disappear after 36 months. | This is a secondhand description, not from Booking’s terms (the site blocks automated reading). Check the rules at the source. |
How fake reviews work: a market that really exists
Fake reviews aren’t just a myth. UOKiK described a company that, according to the office, wrote reviews without testing products or checking customers. Clients influenced the content, length, and frequency of posts, which determined the price. The company also offered bare stars on Google, without text. The offer covered Google Maps, ZnanyLekarz, Opineo, Oferteo, Ceneo, Wakacje.pl, TripAdvisor, Google Play, and Facebook, among others (source: Rzeczpospolita, November 2023).
Platforms respond with large-scale moderation. Google says that in 2024 it blocked or removed more than 240 million reviews that broke its rules, more than 70 million edits to places, and more than 12 million fake business profiles, and more than 900,000 repeat-offender accounts received posting restrictions. In the United States, the United Kingdom, and India, warnings also appear when Google has recently removed suspicious five-star reviews of a business, and there are plans to roll them out worldwide. Google also described the case of a group impersonating locksmiths: more than 10,000 linked listings were removed.
10 red flags: how to spot suspicious reviews
None of these traits is proof. But if several appear at once, treat the ratings with caution.
A sudden burst of five-star reviews
A dozen or so ratings in a short time, after months of silence. Sort the reviews by newest and check the dates.
Generic phrases without details
“Recommend, great, everything OK” says nothing. A real review usually includes a detail: the room name, the product model, the name of a staff member, a situation.
Repeated sentences
Similar wording across different reviews, the same sentence structure, the same mistakes. That’s a sign of a template.
Accounts with a single review
A profile with no history, no photo, and one review, especially a maximum or minimum rating.
An extreme rating distribution
Almost only 5 and 1 stars, with almost no middle ratings. Real data usually has more of them.
Reviews that don’t fit the place
Raves written in a language the business’s customers don’t speak, or reviews of a service the business doesn’t provide.
Overly perfect owner responses
Identical, template responses to criticism, with no reference to specifics. A good sign is a matter-of-fact, individual response.
Mentions of a discount or gift
Reviews written in exchange for a discount or product may be more favorable. If the author doesn’t disclose this and the text sounds like an ad, be careful.
No negatives at all
A business without a single criticism in hundreds of reviews is rare. Check whether negative entries are disappearing.
Discrepancies between platforms
If Google shows 4.9 but an independent site or forums show nothing but complaints, believe the complaints and look for an explanation.
How to read reviews step by step: the 5-minute method
- 1. Start with the lowest and average reviews. They show real problems. Judge whether the same complaint keeps coming up, for example delays, quality, or service.
- 2. Sort by newest. A review from three years ago may have concerned a different owner, a different chef, or a different product batch.
- 3. Look for details, not stars. A specific description and photos taken by a guest are more reliable than a rating with no text.
- 4. Compare several sources. For accommodation, compare Booking with Google; for a seller, compare reviews of the store with reviews of the product; for a service business, compare Google reviews with forums and groups.
- 5. Read how the platform describes verification. Under Omnibus, sellers are required to state how reviews are checked. Missing information on this is a reason for caution.
On Google: how to read reviews of a place
Check whether the reviews were added within a short window of time, look at the authors’ profiles (number of reviews, photos, variety of ratings), and compare them with reviews on other sites. Pay attention to Google’s warnings about suspicious reviews if they appear. Remember that these are reviews of a place, not of a specific transaction.
On Allegro: reviews of a product and of a seller are two different things
Evaluate the listing and the seller separately. For product reviews, read the ones with details and photos. Remember that since April 2024 there has been no “thumbs down,” so the number of “helpful” votes only tells you about support, not disapproval.
On Booking: reviews tied to a stay, but stay alert here too
According to available descriptions, reviews can be added by guests after their stay, which makes them stronger evidence than anonymous ratings. Even so, check entries from recent months, look for recurring remarks (noise, cleanliness, location), and focus on details, not just the score.
Examples: whom to trust, and how much, in typical situations
| Situation | What to check | Level of trust |
|---|---|---|
| You’re buying headphones on Allegro | Product reviews with photos and details, the seller’s rating separately, and a comparison with independent publications’ tests | Medium to high, if the reviews are specific |
| You’re booking a hotel | The latest reviews on Booking, recurring remarks, a comparison with Google | High for recurring remarks, low for isolated extreme ratings |
| You’re looking for a plumber or locksmith on Maps | Review dates, owner responses, whether the name and address match the business. Remember the case of the group impersonating locksmiths described by Google | Low. Also check the business in official registries |
| A restaurant you’re seeing for the first time | Reviews sorted by newest, guests’ photos, the rating distribution | Medium |
| A service with an unusually large number of five-star ratings | Dates, lack of details, accounts with a single review | Low; look for independent confirmation |
What to do about a suspicious review: reporting and consumer rights
- Report it to the platform. On Google, use the menu next to the review; on Allegro, report a violation (this option remains); on Booking, contact customer service.
- Take a screenshot. Save the date, the text, the profile name, and the page address before the review disappears.
- Notify UOKiK if you suspect a business is buying reviews or hiding negative ones. The office handles such cases as practices that mislead consumers.
- Check your rights. If you bought a product because you believed fake reviews, gather evidence (screenshots, proof of purchase) and consult a consumer ombudsman or a lawyer. This article is not legal advice.
Your own reviews: how to write them so they’re valuable
A good review is specific: it includes the date, what you bought or where you were, and what worked and what didn’t. Disclose it if you received a discount or a product in exchange for the review. Don’t rate out of anger; stick to facts. Reviews like this help others and are harder to dispute.
FAQ: the most common questions about reviews on Google, Allegro, and Booking
They’re helpful, but they don’t prove the author used the service. Google removes huge amounts of fake content (more than 240 million reviews in 2024), but some gets through the filter. Read the content and dates, and compare with other sources.
They can. In 2023, Allegro limited the ability to rate reviews to people who had bought on the platform in the last 12 months, to curb accounts that inflate ratings. That doesn’t mean every review is verified. Pay attention to details and photos.
According to Hostaway’s 2024 description, a review can be added by guests who booked through Booking and/or stayed at the property, within 3 months of checking out. This is a secondary source, so it’s worth checking the rules on Booking’s website.
On Booking, according to the same description, not directly, and only in narrow cases, e.g. when the review concerns a different property or is blackmail. Under Omnibus, businesses are also not allowed to distort reviews, for example by publishing only positive ones.
No. The provisions of the Omnibus Directive, in force in Poland since January 1, 2023, prohibit posting and commissioning fake reviews. UOKiK has imposed fines and brought charges against companies trading in reviews.
Look for a sudden burst of five-star ratings, generic phrases, repeated sentences, accounts with a single review, an extreme rating distribution, template owner responses, and discrepancies between platforms. Several signals at once are a reason for caution.
Average and recent reviews teach you the most, because they contain specifics. Judge criticism as critically as praise: check whether it repeats and whether the business responds in a matter-of-fact way.
First to the platform (Google, Allegro, Booking), and if you suspect large-scale faking, also to UOKiK. Keep screenshots as evidence.
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Sources: PARP, “The Omnibus Directive: new obligations for online sellers and online marketplaces”; Poradnik Przedsiębiorcy, “The Omnibus Directive and publishing reviews of products and services”; Rzeczpospolita, “Fake online reviews in UOKiK’s sights” (November 13, 2023); Google, “New ways AI helps keep business information trustworthy” (April 7, 2025); Antyweb, on the change to the rules for rating reviews on Allegro (November 27, 2023); Antyweb, on the removal of the “thumbs down” in Allegro reviews (March 26, 2024); Hostaway, “Booking.com Reviews Policy” (secondary source, May 2024). The scenarios in the “Examples” table are illustrative. This article is for educational purposes and is not legal advice.