5 stars - worth a visit.
4 stars - good place to eat. (if you walk by or live nearby)
3 stars - acceptable but not recommended. (average taste)
2 stars - bad taste, but OK service
1 star - bad taste and service
Most restaurants I have visited and rated so far are in 4 stars.
I haven’t encountered any 1-star restaurants in Finland (where I currently live) yet under this criteria.
Thank you for this interpretation of the ratings, @rumia!
For 3 stars, I’d prefer to say “neither good nor bad” since “not recommended” sounds a bit like “don’t go there”, which really applies to 1 or 2 stars.
P.S. looking at your photo contributions, I find they are really original and a great idea. Just being surprised, the AI filter did accept them all. Indeed 240 out of 204 went public (while 11 reviews are hidden )