Well constructed and solid, our 6 year old sleeps on it so it doesn't take a ton of weight but he is up and down a lot and so far it is tight and solid. He loves the play are underneath, it is not tall enough for a desk, but we knew and wanted that feature. He has added a blanket to make a wall and has his own little library underneath! We read stories under it every night, while he gets in and out easy from the underneath it is a little harder for me but I fit well enough. my only complaint is the ladder rungs hurt my feet, but I only go up a coupe times a month when the sheets need changing.