Silverwing Hotel

The door for 265 looks like all the other doors, except that about a foot off the ground is another, tiny door that most people wouldn't even notice. If Yisui enters that door, she'll find herself in an appropriately-sized stark white foyer with a receptionist pixie. This pixie is what would normally be described as a huge green orc, muscles barely held in his suit, except that like Yisui he's only a few inches tall and winged.
"New blood, right?" he asks from her look.