The goods it keeps your cats enclosed and allows them to have protected outside time. It has held up for one year so far in Wisconsin weather. I assembled it myself on 122520.  It provides a good template to build one myself out of quality materials. 

The bads it is cheaply made. The color is stain that bleeds off onto your hands during assembly. It is NOT a waterproof roof. The roof comes in three panels and they give you two wimpy boards to cover the seam. It doesn’t work and leaks like a sieve in rain - and it’s under my eave with some protection. Mold. Lots of mold accumulated on the inside ceiling. I had to bleach it.  The shelves are not a good design with the holes that cats could get trapped or injured on. I carpeted mine with patio carpet.