Let me start by saying that having two composters or a double chamber one is a must when doing home composting. I started out with a single one and quickly realized that you never get a fully cooked batch because you are constantly adding new material.
This is exactly what we needed, small enough not to be an eye sore but big enough for a family of three who produces a lot of compostable material (we eat a lot of fruits and vegetables).
It took two of us about 45 minutes to assemble and it was pretty easy to do once we found the instructions on the website, which are better than the ones that come with the unit.
The only reason I don't give it a five star rating is because I wish it came with a mechanism to collect compost tea. Right now I have a bucket underneath it to collect it, and it works unless it is really windy.
As with all composters, sometimes you see ants or flies around it but it's never been bothersome. If it is too bad you may need to add dry material.