The arcade : Causeway bay gamecenter

Rufus knows the place, he's been here already. He hasn't made aware Claudia that he knows, because the place is usually full of mortals, and he wouldn't let her know that she's watched (maybe she noticed and accepted it though, she never made aware that she knew he knew). USually she uses the last floor's rooms, which contain a small maid's room, right in a renovated attic. Sometimes she sleeps there, but she mostly uses it to talk with students and they don't seem to know it's actually a room. It's about 20m2, with the tallest part being about 1m80. Rufus has to crouch to be inside.
The place is a small living room with a sofa/bed, a low table, and some clothing in drawers she installed against a wall. There is a certain amount of books under the wooden flooring, as well as a few objects she lets there for safe keeping (maybe old papers or personal belongings). There is a bathroom with a tap to give access to tap water, but no shower nor bath.
Rufus can smell her odor once he gets close enough to the roof, because the maid's room is right under the tiles, and despite isolation, Rufus has very sharp senses. He can easily smell her blood, maybe from the dress she wore the night before.
Rufus can access the room through melding in the building, but he could also access by moving the tiles above the room. He's too big and tall to fit between the wooden beams, but William could acces through there. That, or putting him on the floor and tell him to go upstairs like the mortals. There's a door, and Claudia doesn't fly.

It's clear the tiles were made to be moved from the inside, as there are marks on the inside of them, showing the person using them moves them with an crow bar, using it as a lever. Yet, they are heavy enough not to move with a storm or a heavy rain. The isolation materials are just a second protection, but a person may pass through them and put them back as they were as if they were just curtains (quite thick and solid ones).