We bought two of these, the first took two of us over two hours to erect and the second 1.5 hours.  They weren’t particularly complicated as the instructions were reasonable; there were just a lot of parts. We needed the kids help to hold the side bars when fitting the end bar and unsure how you’d manage this with two of you.  They are fantastic and amazing space saving. Bought for a ten year old (152cm) and a twelve year old (172cm) and are perfect. A little creaky but feel totally secure, when it’s erected make sure you re-tighten all fittings finally to make it most secure. Kids can’t sit up in the bed due to the height of the bedroom but neither mind, they love their loft hideaways and all the room below; they fitted LED or fairy lights underneath which looks really cool. Plenty space for a desk, chair and a futon. Perfect and really happy.