My 5yr old loves it!!!! We bought the model with the 3 drawer storage and bookcase option, all together took about 2hrs to assemble. The difficulty was that not all the parts were numbered as it showed in the assembly instructions. But once you figured it out, it was easy. My son took to the ladder option every easily, no problem with heights. Solid wood (Pine) is the entire loft and storage wood used. Its beautiful and functional for a small bedroom.