Beautiful cat litter box, exactly what I was looking for! It took me 40mins to assemble and that was with 3 toddlers running around. It also comes with extra screws just in case (like when the toddlers take off running and kick the pieces). 
I bought a $5 plastic litter box to put inside and it fits perfect. My cat uses the litter with no problems.
The instructions do warn about this but I thought I'd reiterate- the wood is easily scratched. The screw rubbed over it and created scratch marks. Doesn't bother me tho because they're light and blend.