It seems we came at the point where people have become contrarians, they will take some shitty 20 year old game and pretend its actually a good
I played and liked Thief 3 at release and will continue to say that it's a good game, fuck you
It has its flaws but it also has a bunch of cool levels. The widow's manor and the cradle are two - and if anything the real recently emergent contrarianism is to say bad things about the cradle, when it's spectacular. Zumg it doesn't fit Thief. Yeah, it's certainly at odds with all those random-ass levels from The Dark Project for example AMIRITE.
Apart from that there's the clocktower, the museum, the sunken city which are all good. The ghost ship is cool but short. The first real level is also not bad. The city hubs are boring when you have to go through them repeatedly and turn into a total clusterfuck later on when enforcers and Gamall take to the streets but also have a few fun quirks and secrets that are nice to stumble upon.
And finally, Thief 3 absolutely retains the general feel and atmosphere of the Thief series. It's a Thief game that suffers from consolitis, but a Thief game nonetheless, and that still makes it a good game despite its flaws. There is no way in which Thief 3 can be called "shit".