Stella asked me where I'd sleep and I said in my sleeping bag on my foam mat, I suppose. She wasn't particularly happy about that because she wanted me next to her. She asked whether I couldn't put out the mattress the next day but I'm not sure what the temperature will be then; I want it to be below freezing. I also opened the big window-door there.
So we brought over the mattress from the guest bed so that I can still sleep in the same frame, just on a different mattress. It's higher than our mattresses and a bit narrower.