As other reviewers have said, the location here is unbeatable. Right across from Ronnie Scotts, Bar Shu and many many other locations within easy walk. Easily the best located Air I've had in London bar none.
Check in was easy, we saw 2 other sets of guests struggling with the lock box instructions but we found it straightforward.
The apartment is cute, beautiful original fireplace, but in need of an upgrade. As previous reviewers have noted, the bed sinks in the middle. The floors slope heavily, which leads you to slide off the bed in the night. Couple of other observations, generally its cheaply but reasonably furnished. And oh the noise, which is well documented here.. we stayed 8 nights, which is a long time with max 2-3 hours sleep a night. The bar crowds sound like they're right next to your bed, until around 3am, one hour off (maybe 2), then the garbage trucks start up, collecting the whole of Soho's glass bottles, and seem to run for another hour.
Apartment floors were not clean but rest of apartment was.
We reported a significant safety issue on day 2 with an outlet that was alarmingly cracking and popping upon use.
Bottom line a fun but basic apartment which would suit a younger crowd focused on the bar scene, for a short stay.