Easy to erect, very firm and comfortable to sleep on. I slept on it for 2 nights with no back issues. I weigh 47 kg but the sofa is only big enough for 1 person. Need a slightly larger than single bedsheet to fit the sofa, double size bedsheet will be too big. I recommend it as it's quite cheap and affordable for simple purpose like sitting on occasionally and short term sleeping on for visitors. I love the space beteeen the sofa bed and the carpet, which means it's easy to vacuum underneath or space enough to put storage box.