Excellent place. Easy to get to from Waterloo station via rail (just two stops on SW rail...Oyster works on it) to Queenstown Rd station.
The place itself is great with a nice large kitchen and everything you need. Sainsbury's is just a 5-10 min walk away.
Overall it's nice place with plenty of space and justvenough outside central London where it's actually quiet and calm after a busy day of sightseeing. Highly recommend.