The location is almost too good, since you don't really need to go anywhere else, being walking distance to Chinatown, SOHO, Covent Garden, Leicester Square, Picadilly, Trafalgar square, several world class museums and even Westminster and Big Ben.
Even so, lots of public transportation around. The flat is in a small relatively quiet street (considering the location), but probably quieter in Winter with windows closed.
The interior felt actually larger than shown in pictures, with windows on both sides of the flat.
Also, it feels like a real home, more than an impersonal rental flat.
Check-in and check-out went great (left our bags with the housekeeper for a few hours before heading to the airport).
We had a small problem with keys which was resolved in one phone call and in less than 2 minutes !
If you're thinking Marcus' place could work for you, you can book it without hesitations!