Good product, easy to build and quite easy to fit to the wall. The instructions are quite helpful. The one thing I would say is that you need to make sure your corner, where you want to put the shelf, is at a right angle. May go without saying to most but we didn't realise this and had quite a lot of trouble putting it up. We managed it though and don't think you notice too much that we had to fit it away from the wall slightly. We also had to put the brackets in slightly different places to where the instructions suggest. 
Very sturdy. As it looks in the picture. (We have it in grey).