Our group of 5 stayed at Andy's house for 5 nights, it was exceptional from the moment we arrived. Check in/out was very easy. There is plenty of space for everyone to have their own privacy. Fantastic kitchen if you choose to stay in for the night. Andy left some essential supplies for us, which included a bottle of wine - this was a very nice touch! The showers have the best pressure and plenty of hot water - hard to find in London!!
We can't recommend Andy's place more highly for a group travelling to London!