The enclosure is pretty to look at. It does have some concerns. It is on the smaller side which is ok, but it is long & narrow which requires a long reach inside to place the litterbox. Setting it near the opening as shown would allow the cat to spread litter as they exit. 
Assemble was easy, but it's necessary to partially put your body inside to tighten the screws. If you're a big person this would be difficult. 
It doesn't seem to be as sturdy as I would like. Time will tell if it holds up well. It is definetly not a bench as it only holds 20 lbs. It is good for only disguising the litterbox & that is what it is made for.