How do I decline invite without upsetting my friend. She lives in a one bed flat and has asked me to come and stay over. She only has a single bed, which I hope she lets me have. Otherwise it’s cushions on the floor and I’d never get up off the floor. I’m also a wriggler and honestly think I’ll probably fall out of the single bed. In addition her gay friend (male) is also staying over and she says he sleeps on the floor next to the bed!!! I’m no spring chicken and sharing a room with a guy I only met once before isn’t appealing.
how do I excuse myself politely and without offending her?