I thought he was enjoying his life as an ASS - A Sharingan-less schmuck ? But joke's aside, that's room service. In Japanese traditional hotels different waitresses bring different things, like warm water, tea, breakfast etc. I doubt those are prostitutes, because if you look closely at their feet, one is going out and other is coming in. Also, those are very ordinary kimonos for prostitutes.
No wait, it's a bath house as someone else. Checked another image. So those are men or male prostitutes. Kakashi is the man.