Everyone knows this place and it is definitely a go to place for vegetarians.
However, over the years their prices have steadily creeped up while food quality and service has gone down. I guess sometimes that is inevitable.
Overall, I would recommend this place for a party, big groups and if you are truly famished.
Food selection: 5/5 so much to pick from, you can't go wrong. You'll find something or the other to satisfy your taste buds. The dosa station is sometimes not properly managed.
Food: 3/5 some dishes do lack flavours. So it can be a hit or miss.
Ambience: 4/5 depending on where you are seated.
Service: 3/5 the waiting staff are great but the servers behind the counters are another story. Very curt and not keen on listening, serving and tending to customers.
Overall, if you are a vegetarian person who's tired of lack of food choices, this place may be an answer to your problems. Personally, I'd rather go for a la carte at other restaurants which offer better tasting food. In the end it's all about quality vs quantity.