We never got to meet Caroline or Christian, but their friend helped us in and greeted us into this lovely space. One enters on the 7th floor where there is an office/bedroom (with full bath and beautiful terrace) open to the stairs that lead up to the main area.
The upper space is large, dramatic in terms of its views, and comfortable, while the terrace is huge enough for a sizeable guest dinner. We loved all aspects of this gorgeous flat and would definitely return.