My Seoul flat is very small, and I often feel bad about making the CS'er sleep on the floor, so I will often let them take my bed and I will sleep at my girlfriends who just lives down the street. Now, I will meet the person before making the decision about leaving them or not, but I have yet to host a person I'd felt uncomfortable about leaving.
Naturally, I don't state this in my profile, because I don't want people thinking they are going to have a free flat during their stay and party it up.