Not as difficult to assemble as we thought. My teenage daughter and I assembled and it too about 90 mins over two sessions with the bed being 60 mins and trundle 30 mins. The style is rustic yet modern in appearance and very stable once complete. The top mattress is thicker than the trundle yet, neither are of great quality and somewhat uncomfortable due to inferior spring mechanism. They work well for guest beds and especially for teens. Would recommend adding a layer or two of mattress protectors to make softer nonetheless would still give this product a 4 star for appearance and space saving in small bedrooms.