It depends on your taste.
I usually eat only those
Hunan: Maojia (everywhere, Tianhe North and Dongpu are my favorite places), Dongting local dishes (Tianhe South, Dongpu, Normal University, etc.), which are characterized by richness and frugality, and the average per capita is about 5-15.
Cantonese cuisine: Bingsheng is the most expensive, and there is one in Gangding Hotel, which tastes good and has a small weight, with a per capita price of 15. Generally, things like Macau Street, Daoxiang and so on are all good.
If you want to have a taste, book a garden hotel (although it is not Tianhe District, you can have a buffet for couples to eat, about 3-4 people)
If you want to eat special dishes, the oysters at Tianhe Interchange are good, the oysters are great, the porridge is also great, and the average per capita is about 8
And Erlang frog (Junjing Garden, Tianhe Interchange and so on).
I suggest you go to Dianping.com!
Shandong cuisine, the hometown of Shandong (Tianhe North, Yuexiu, I don't know the others, the taste is ok, but it is a little more expensive because of its northeast cuisine. )