We bought this bed in the full size for our son's room. He had some bunk beds but they were just too large and blocking the window, but we wanted to have the extra bed, so this was perfect. Installation was easy, about two hours from opening the first box to fully assembled. We did use a screw gun which definitely helped. For the mattresses, we used a 7" twin for the trundle and an 8" full for the top/daybed. They both fit nicely and my son loves this bed. It is LARGE, as in, it's a big piece of furniture. But because of the bookcase and storage, we were able to take out the shelves we had in his room - so it works well. Hopefully this will last for many years to come (which is why we opted for the full over the twin). We purchased the "honey" version and it's a beautiful light colored wood. Very happy with the price, service and purchase of this from Wayfair.