Very cool and unique stay! As others mentioned, those stairs can be killer if you're traveling with older folks or have a lot of bags. The flat was clean, cozy, and met our needs. Great location as well! One bathroom was a little tight with six people but we knew what we were getting into.
The host is great as well - clearly communicated with us and met us at the door, even helped us up the stairs with all of our luggage and walked us through the space.