Just got it put together about an hour ago! My Grandson (14) and I put it together and it took us about 5 hours! instructions at times were confusing! It is for my granddaughters. they are not home this weekend to get it a thumbs us yet but there isn't any room to sit on the bottom bunk. I'm not sure if  the mattress is to tall or what! Will have to check into a thinner mattress to see if that will help! My granddaughter is 11 that will be sleeping on the bottom bunk! I know she like hanging out on her bed playing with her computer and talking on the phone with her friends so she's not going to be happy,not being able to sit up on it! But it is nice looking and sturdy!