The worst thing I’ve found with positive reviews is ones that are obviously fake/incentivized. I looked up reviews recently for a hotel that I used to stay at a lot for work, and had gone way downhill with many issues (broken ACs, mold, leaking ceilings, etc.). I was curious if they ever fixed their problems. I was at first surprised that they had a fairly positive overall review rating. But looking deeper, the many negative reviews were just crowded out by obviously fake reviews. Dead giveaways: every single one named multiple people by name. “Dave at the front desk was just so friendly and welcoming! Barbara the housecleaner did a fantastic job cleaning. And Steve the bartender just made my day! I love this hotel! 5 stars!” (Almost) nobody reviewing a hotel for real does that.