I would suggest checking out Grand Palisades in Tai Po. It is an estate located on a hill overlooking Tai Po and has beautiful grounds. There are nine blocks of flats, each 10 stories high. The flats range from small 2 bedroom flats to larger 1200+ square foot flats. We recently inquired about a 946 square foot flat with 3 bedrooms and the cost was $13500.00 (negotiable).
It has a shuttle bus to Tai Po Market MTR Station, 24 hour security, very large outdoor swimming pool and nice clubhouse facilities, including a gym and children's play room (not a lot of things to play with inside, though). Tai Po Kau Nature Reserve is about a 45 minute walk away, if hiking is something you enjoy doing.
We have lived here for 3 years and have met many other families. We find it quiet and convenient.
Good luck with your apartment search!