We stayed in Martin's apartment in June, 2013. This is a fantastic base for a central London holiday. The decor is lovely and everything is well maintained as seen in the photos, which accurately reflect the apartment. The area is very safe.
It is very close to the underground and other public transport, it is possible to be in the centre of London in 15 minutes. Shops, cafes and restaurants are all close and Martin provides excellent guidance in these areas.
Martin and Pat are lovely hosts, and offer heaps of information and help. They have the apartment below, but this is not a disadvantage and they do not intrude on your privacy. We had a fantastic time and would certainly recommend the apartment.