It is an extremely amazing place, not only the place but also the kind host.
Firstly, about the bedroom. It has enough space for 2 ppl, very cozy and stylish. The bed is not very hard or soft, just comfortable.
Secondly, the transportation there is convenient. A bus stop just 2 steps far from home down to Marble Arch, Selfridges, Piccadilly Circus...About tube: literally, it takes me less than 10mins walk to Shepherd's Bush station(there's also a big shopping centre called Westfield).
Further, I personally feel the area is safe even at night, good to get some fresh air or chill if you want. :)
Jay is a really amazing person, I feel like she cares about life and people, so don't be shy to chat with the sweet host.