I stayed at the Staybridge Suites in Alpharetta 8 nights during Aug.-Sep. 2012 and it was very nice and quiet experience.
The hotel staff are very kind and willing to help.
Breakfast is not that good but from my experience in hotels in the US, it is standard.
Hotel has a nice swimming pool and small Gym.
Rooms are nice and clean. Kitchen has big fridge and microwave so you can make food (also has all facilities and tools to make good dinner).
Room has big LCD (I think it was 42") but very standard American channels and not much to see.
Overall, good stay, nice hotel, will probably be back there on my next business trip to that area.