So far we are really happy with this chair.   It's super easy to convert it and bring out the additional legs.  (The legs hide discretely when not in use.)  The chair is comfortable and my teen loves it; he likes to flatten out only the lower half to play guitar and gaming.  We haven't slept on it yet, but it seems reasonably comfy for an overnight.  We bought the Ultra-Soft Down Alternative Mattress Topper on Wayfair and it seems this combo will do the trick.