I've been here twice and I just haven't been impressed. I just don't really get all the rave reviews from Yelp and even magazines such as Toronto Life and Aeroplan. Now obviously I'm not saying it's the worst restaurant on the planet but I think the hype is larger then the end product.
The first time I came it was really disappointing. Now it's probably because I ordered the burger and I've had my share of burgers all around North America. But man it was awful. I believe the blue cheese had something to do with it. If you love blue cheese, then perhaps it won't be as awful. By the end of the night, I had spent quite a bit of money but didn't have much to show for it.
The second time I went, the experience was better. I don't quite remember what I ordered but I don't recall it being a standout experience. All I remember was that I still felt that this place is a bit overrated.
One thing that you can't knock Nota Bene about is its atmosphere. If you love a busy restaurant that has buzz, this is the place to be. Lots and lots of cool people there and everybody seems to be having a great time. Definitely makes you want to hang around a bit after the meal is done. However, I do recall the hostess being rather snooty. I don't know what it is with high-end restaurants in Toronto. Maybe it's that they can smell I'm poor or something. But man is it hard to not get somebody with attitude at Nota Bene. I guess it comes with the territory.
To summarize. Food is ok, not spectacular. Service is good except hostesses. Atmosphere is amazing. I'll probably go back just to give it another shot because of the atmosphere.