We're staying at the inlaws for a month because we're having some renovation work at home. FIL absolutely refuses to put the heating on. It's not yet winter according to him. MIL has been sitting on the sofa in her coat with a blanket and hot water bottle, shivering, these past few evenings. We asked FIL to put the heating on tonight because our bedroom is like an ice box, and he said no.
AIBU to give him some cash for the heating and ask to put it on? Do you think £100 is appropriate? We were going to give them some money (couple of hundred) for bills etc. when we leave (even though they keep insisting not to worry). I'm thinking offering some cash up front might help motivate him to put the heating on now.
For context, they're both 70, retired and financially comfortable, and live in a mortgage-free, 4 bedroom house in an affluent area of the SE. (What I'm saying is they're not hard up, so don't think it's unreasonable for them to have the heating on atm).