Rupert's place is very conveniently located off of Clapham Common. A pretty short walk to the Clapham Common tube station on the Northern line allows for easy access into the rest of the city. There are tons of nice coffee shops around Clapham, just a few blocks away from the flat.
The flat itself is very clean and comfortable and quite suitable for a solo traveler or couple. I enjoyed the stay and would stay here again.