There was this homeless guy that used to train at my old gym. Very strong guy. Would train 7 days a week, midday. Kept him out of the sun, I guess. Came in, showered. Worked out for 2 or 3 hours, showered again, then left. Had access to soap, bathroom, etc, and sometimes used the microwave near the door before leaving. Polite as hell- probably didn't want to blow a nice clean-up spot for $19 a month. Nice guy.
I think his name was Vince.