My experience of sofa beds has always been pretty poor but I haven't stayed on one in ages and generally, though not always, they were pretty cheap things.
We have guests 3 or 4 times a year, for anything up to a fortnight at a time. We love having them and since it's often my lovely PiL I'd really like it to be comfortable when they stay. But I have no idea no idea what's good. There's lots of choice online but no way to know what the bed feels like and even in a store you don't really get a feel for what it would be like for an extended stay.
Has anyone stayed on a really comfortable sofa bed that they'd be happy on every night?