Location
This place is near Tai Wo MTR Station, although it takes 1km for walking. The nearest bus station is Tai Po Old Market Playground (CityBus) / Tai Po Old Market Park (KMB).
The arcade is under the stadium. Although you may see the menu of a restaurant and posters about snookers. That's the correct direction. Go down the stairs and walk into the restaurant. The arcade is at the left hand side.
Facilities
As mentioned, outside the arcade there is a restaurant and the food is actually decent.
Smoking
Smoking is allowed in the arcade, and thus there are cigarettes smells in the arcade. Please pay extra attention if you are sensitive to cigarettes smells.