Quick FYI,
Ive used day rooms a lot for photo shoots. All positive, but checking in with the lady present is potentially difficult as the staff are not shy at asking name or address nice and loud. You will need to use the one that matches payment too, so a prossie with good ears knows who you are. I had a gorgeous redhead with me in Leeds and she was nervous, she had a hold of my arm all the way in and caught both my name and addy. She was sweet and nothing came of it, but another girl might not have been so kind.
Better to check in first, welcome her when she arrives.