Jonathon's apartment is clean, modern and uncluttered but also has historical features which we really appreciated. It was plenty of space for our family of 4 but I imagine you could probably sleep 6 with no problem too.
We can't say enough about the location! Everything was either walkable or doable by public transportation so you don't need a rental car unless you want to deal with parking. We preferred not to!
Also, Jonathon was always quick to respond to any questions or concerns we had.
Two things we might mention is a lack of a microwave and the steep, narrow steps up to the apartment. We didn't have any problems with the steps because we travel light and have no physical handicaps.