We stayed for 6 nights in Dec. The apartment is clean and well furnished with a sea view. Located next to the main road and 5 min walk to the very beautiful, crystal clear water beach.
There is a very convenient 7-11 store on the ground floor facing the main road and an Indian restaurant next door if you are very hungry.
Hua Hin is a great place, I loved it. I dream of buying a property there someday soon.
You will need to pay around 80baht per day for electricity, Internet 50baht per user per day and cleaning charged of 1600baht when you leave.