Leo's apartment is a gem! a studio apartment in the heart of Marylebone, yet completely quiet, surrounded by excellent places for foodies (Ottolenghi right around the corner, Fischer's, Chiltern, ... The excellent Wallace Collection is less than a 5 minute walk. I highly recommend!
There were some difficulties with my late check in (flight delayed), but I believe people are judged by how they respond to challenges, and Leo was quick to respond and great.