The positives: Quiet apartment. Very lively area. Close to metro. Many good restaurants, bars and coffee houses. Plenty of entertainment venues. Walking distant to many attractions: the British museum, Hyde park, St James Park, Buckingham palace,...
The only negative: The sofa bed can use a new mattress. It felt old and was very uneven. I weight under 63 Kg and was having a little trouble finding the "sweet spot". I can't imagine a heavier person can be comfortabe on the bed. I was told, however that the bed in the bedroom was very comfortable.
ONE COUPLE SHOULDN'T HAVE ANY PROBLEM.
I WOULD STAY HERE AGAIN.