I was in Surin for the weekend and stayed Thongtarin, for 1100 baht per night.... the 2nd night i decided to change and tried The Grace hotel Surin. Pretty good location with a restaurant connected called Chhhhngai restaurant. New hotel, great price, great service and good size rooms.
Address: 1/15 Promtep Rd. Naimuang, Mueang Surin, Surin, Thailand 32000
Free wifi, outdoor small pool, room service, nice gardon and meeting room too.
Pricing ranges from 550 - 1500 baht/night (I had the 700/night superior)
8.3 rating on Agoda. (best rating than any i could find for mueng Surin)