Lovely daybed. Feels study while sitting or lying on it and doesn't creak when using it. You could see the support bars flex at front when my 3 year old started to jump on it but that's obviously not what it's designed for- but it didn't break! Trundle seems to work well although not tried sleeping on it yet, looks like it would be fine for a child or infrequent adult use. I have a 6" mattress on the top at the moment but it could easily fit an 8" or maybe a 10" at a push.