My experience of sofa beds is usually a rather uncomfortable night's sleep while wondering if the host would be totally offended if I gave up and just slept on the floor instead (have never quite had the nerve to do this!) We now need to buy something which will be both a day sofa in our living room (so would like to avoid the futon-style) but will also be suitable for guests including our ILs who can sometimes stay for a week at a time.
Any recommendations gratefully received.