The good:
The location and experience was great. Everything worked well, and there were no problems with the check-in and check-out processes. The flat was clean, and the bed was comfortable. They even had an iPad in the room that you could use to surf the Internet if you needed it. The wifi was fast and reliable. The breakfast snacks came in very handy for a quick bite to eat before starting our adventures. It was like staying in a hotel at a greatly discounted price.
The not so good:
Parking was a nightmare. There aren't any designated parking spaces, and the only available spaces were a couple blocks away. I tried several times each day and night to find a closer spot with no success. The shower is pretty small, so big guys like myself (5'9" 270lbs) may have a tough time scrubbing your toes unless you're also a contortionist. :) Finally, just a word of caution, there is no elevator, and the flat is on the 4th floor (5th floor by American standards), so be prepared to get some exercise.
Overall, I think the host and her staff did a great job to provide a valuable service to the Airbnb community. If you don't mind small showers and lots of walking and stairs, you will find this to be a great value!