I had been to Gufa with my friends. About 15 of us occupying 3 tables. At first look you get a feeling that you are getting into a real cave but then you are welcomed by a bunch of guys in shikari shambu attire. You are made to think what shikari shambus are doing inside a gufa. Some guys in tribal attire would have been more apt.
The food is good though not great.
The ambience is nice expect for the music being played which annoys you after 10-15 minutes. A few more thinks could be done to give a more realistic cave feeling but I guess the cost would increase and it would turn out to be a theme park instead of a restaurant.