Banquet or dinner with friends?
If you have a banquet, go to Tiandu. For regular meals, go to the restaurant next to the Normal College. The food there is good and the price is relatively affordable.
When my friends came over while I was studying, I would let them stay in Yanqing Apartment.
The price is around 50-100, on Guangyang Road.
But we were under strict control at that time and couldn't get out much.