First: Enshi Gymnasium, next to Danyang Night Market, seems to have classes from 5: 30 pm to 8: 00 pm. I studied the national standard there before, and there was air conditioning there. The facilities in Enshi are relatively good, and the tuition fee is about 400 a month. You can consult them for details.
Second: Dayuehui Square is the bridgehead of Qingjiang River in Enshi Second Street. When I worked there before, it seemed that there was a private building on the third floor, which seemed to be Building A. Looking up from Qingshui Corridor, it should still be there.
You said there, not much, I don't know! I'm sure the gym is the best!