Hi
Temple city restaurant in Melur road is quite good - variety with taste. There is Vazhai for the non-veg lovers ( nadappana, parappana and midhappana

)
North gate in Tallakulam
Various messes catering to the non veg with mouthwatering food - also in Tallakulam.
Ashok Bhavan near Tamukkam
As for the star rated
Pandian hotel on Alagar koil Road
GRT in Palanganatham
Taj in Pasumalai
Sangam Hotel Etc are there.
In the city centre there are
Modern restaurant
Sangam
Arya Bhavan. South Masi st
Park Plaza near the railway station etc
Recently A Punjabi Dhaba has come into existence; on sundays it's so crowded we've never been there. It shd. be good I guess.