John & Masha's place is, as advertised, well located, conveniently close (walking distance) to Lewisham with its well connected train station, buses and shops & restaurants. It is also very competitively priced for something in that location.
Masha herself (John was not there during our stay) is a fantastic host: kind, friendly, helpful and accommodating. She was also out quite a lot of the time, giving us full use of the living spaces.
The only two downsides are that, first, the property is a bit dated, with charming but ageing original 1930s facilities and features. Second, it is rather cluttered throughout - which also makes it feel a bit cramped in places.