Honestly, he has absolutely no issue with mattresses on the floor. Arguments could be made that it was more comfortable than many other options. 

He shut the bedroom door behind him as soon as he was in and allowed himself a moment of just watching before Nida started to move. It is more practical, working his layers off on his own, stripping down until there was nothing left but a pleased smirk on his lips. But he doesn’t move to the mattresses.  Given what they had talked about, it would no doubt be far more fun for them both if Bill got him there. Or not.