Have a search on the internet for Orchid Bungalows in Hua Hin.
The manager's name is Udo Baaz - he's a german fella but his english is good enough. He manages about half a dozen bungalows which are a 5 min cab (or tuk-tuk) journey from Hua Hin town and a short walk from a really nice beach.
The beach has a couple of good restaurants which are cheap, friendly and serve good food.
My family rented 4 of the bungalows in January and we all enjoyed our stay there. Udo is a really helpful guyt and will be happy to advise on the best places to go for days out, he even saved us some money by arranging some for us.