I'd give this a solid 3.5, but rounded up to 4 because the host was very helpful and easy to work with.
The place was largely as described and had everything you might need. Check in was simple, the host provided comprehensive directions and tips about the neighborhood. He offered to be of assistance and to stock the kitchen with anything we wanted. We didn't need much, but that was a nice gesture.
The problems I had with the space had little to do with the host.
This is a basement apartment (which is what garden means in Chicago, I learned). If you're 6' or taller, you will hit your head on things, as I did. If you're shorter, no problem.
There are an overwhelming amount of air fresheners. The host acknowledges this in the welcome note and suggests unplugging them if you find them to be noxious. The problem is, in doing so, a strong cigarette smell comes into the space particularly early in the morning. I have a sensitive nose, so if you don't there might not be a problem.
Also, there is a dog that lives upstairs. His barking woke me up at 4am on one morning and 7am the second. If you're a heavy sleeper, this might not be a problem.
On the whole, the host was great and the space was good enough for what we needed and the price we paid. But I may have made a different choice if I had known before what I detailed above.