Karla is a great host. She really makes an effort to make sure that you enjoy your stay. I had to get out of my reservation early under some difficult circumstances and Karla was very understanding, all things considered.
The location is decent, though a little out of the way. Not too difficult to hop on the subway and get to downtown Brooklyn in 30, Manhattan in 40, etc. Unfortunately, it's just outside of the range of the rentable city bikes.
The apartment itself is nice, fairly spacious, and just as advertised. There were some minor issues with the electronic lock on the front door, but I know Karla is working to fix that as soon as possible.