I've been at the Mtn Club with my wife (we're in our mid...ok, now late-20's) for about 5.5 years. It has been an entirely decent place to live. Incredibly convenient....since I've lived here, I have worked to the south (Somerset), to the north (Bergen), and now in NYC. You are close to every major highway you need to navigate North Jersey.
It is an extremely safe and quiet neighborhood. The amenities are decent....pool is nice, tennis courts are newly re-done, and gym is serviceable (but not great...newer treadmills and elipticals).
Heat and hot water are included. Never run out of either. Never had a problem with winter time temps in the apt.
We have parked 2 vehicles here for 5 years and never had problems. 99% of the time get a spot at our building, every once in a while a 2 minute walk (sunday nights are tough...)