Max and Billies apartment is in a fabulous location. It is so easy to access all the major sites via public transport. Kensington Palace, High Street and Hyde Park are all just a short walk away. We also hired Santander bikes which are all over the place to access some sites like the British Museum and Covent Gardens. There are plenty of supermarkets and restaurants to choose from within a short walking distance.
The apartment is up the top of 4 steep flights of stairs so don't attempt if you have knee or heart problems or asthma. Also, if you are a light sleeper you will probably not get a great night's sleep here. The street noise is very loud through the single pane window and there are noises all night from the apartment building itself like pumps or machinery. The apartment is a little tired and a few things don't work properly but if you are prepared to overlook these shortcomings the position probably makes up for it.
Billie was very easy to communicate with and responded to my questions very quickly. Check in was also a breeze which was a relief after a late flight and arriving at 11pm.