Upside - Very nice place in a fantastic neighborhood. There were four in our group and everyone raved about the comfort of the beds, convenience of the location (lots of stores, restaurants, etc. plus not too far from either train station). The street stands selling fruit, vegetables, and others things added to the charm, and despite the general business during the day, the apartment was very quiet once inside.
Host - Tanya was very responsive, especially when I was first trying to figure out where to stay and having some issues with the members of my party. Her emails and instructions were easy to understand. Her flexibility really helped when organizing the trip.
Downside - Nothing major. Most of the grocery shops in the area seemed to close by 10pm (I didn't explore the area too much late at night, however.) Sometimes it was a little challenging to get the keys out of or back into the key safe, especially when it was dark outside.