I have seen sagar ratna since my childhood this place is so good that once in a month I do visit it and the food in this restaurant is very yummy.
The best thing to eat here is dosas and uttapam as it is the best restaurant south indian restaurant. I've eaten dosas, chowmein, etc.
Shakes are also served here which is a mandatory as the summers are going. The interior is also good as compared to other restaurants nearby. The bad things about this restaurant is that the service it is quite slow.