Hi I visited Hainan island in 1992 and stayed in Haiku and longlou near wenchang. How about the hotels in Longlou

For place to live, I only know the Hiseng Resort there is very nice and I am not very clear about the home style hostle in that town.
For the seafood, the resort provide seafood. If you do not want to eat the food of the resort, you can find many family restaurants along the street. It is hard to tell the names, but there are many of them.