It just seems to me, from the size of the building, that Sherlock's room doesn't have space to exist where it is. But I could be wrong. I think it should put his window looking out onto the main street, if he has one. That means he could be nosy and spy on everyone, which I like the thought of. Hopefully someone will put up some high quality screencaps and I can get a good look at the room. It seemed tidier than I expected, but if he has a sock index, maybe he's anal about his stuff. It would be very Sherlockish to keep his own space pristine and completely destroy the common areas.