Quite like it out in Tai Mei Tuk area, bunch of restos, people are by and large friendly, there are some expats scattered throughout the villages but I don't know most of them. New beach may or may not be a good thing on weekends but already gone for a swim and it's quite nice. Lots of good hiking and swimming the surrounding mtns as well.
Rent is reasonable 11~17K depending on view and age/design. Serviced by 2 mini busses and 1 KMB as well as an additional bus into the county park on Sundays/PH, about 30mins by bus to MTR (unless you catch the elusive express run), from MTR can be quicker as little as 20mins as it fills up and skips Taipo.
Unfortunately no groceries, there is a farm you can get a few produce items at, but otherwise just drinks and dry goods/ snacks at Q-club, a new "shop" opened by the beach but even less there. Pity no one has the forethought to open a little grocery store. Did spot a "vegetarian" shop near the Budda but haven't been in.
But if you want real rural, go live on Kat O or Ap Chau!