We made our way there from the Sha Tin MTR station – about a 5-minute walk. (Detailed directions on how to get there – here.) It is a little bit of a climb to get up to the monastery itself, but with the many different golden buddhas lining the path leading to the monastery, it made for a very interesting trek. There were signs along the way warning people against fake monks asking for money and also notices asking people to respect the place and not treat it like a park and have picnics there.
Definitely worth a visit if you ever find yourself in the area. Remember to have insect repellent on you, though. The mozzies feasted on me (but D was fine, go figure!); by the time we made it to the monastery, I was scratching like crazy. Luckily, an old man had some kind of mentholated oil and applied some to my bites. Instant relief!
(You can read more about the 10,000 Buddhas Monastery here.)