A hostel's overall star rating is a poor predictor of whether you'll actually enjoy staying there, because it averages years of reviews together and doesn't reflect current management, renovations, or a recent decline in quality.
Sort reviews by most recent, always
Read the last 15–20 reviews specifically, not the highest-rated or most-helpful ones the platform surfaces by default. A hostel that was excellent two years ago under different management might be mediocre now, and recent reviews catch that shift.
Search reviews for specific keywords
Search within reviews for "noise," "lockers," "security," and "bathroom" — these four topics predict day-to-day comfort far better than a generic star rating does. A hostel with consistently good scores but multiple recent complaints about noise or broken lockers is telling you something real.
Check the map, not just the address
"City center" in a listing title can mean genuinely central or a 25-minute walk from anything worth walking to. Actually check the pinned location against the sights and transit stops you plan to use daily.
Takeaway: Sort by most recent reviews and search them for noise, lockers, security, and bathrooms — these four checks catch more real problems than the overall star rating ever will.