Greenwich is a good place to be if you want to visit London: 8 min by train to London Bridge Stn, 15 min to Cannon Street Stn. DLR connections also available. Altons flat is just 500 m from the station, and yet in a quiet street with little traffic.
We had chosen the room with two beds, and everything was in good order. This includes the rooms we share with Alton and the other guests (an American couple): the bathroom and the kitchen.
Alton is a friendly and helpful guy, who gave us all the necessary advices, and a little chat.