I thought that given how small the space I was staying in was, it was very well thought out and comfortable. And the bathroom was actually a good size.
The hosts were professional and left a helpful guide to the apartment and the city in the room. My only issue is that although I was aware that I was on the top floor and had stairs to overcome, there were significantly more than I had realized. It's not so bad if you're just walking up/down, but pretty horrible if you've got luggage. The neighborhood is terrific though. The apartment and building were accessible by a digital key provided morning of and I didn't have any issues, but would have loved a backup key for safety since my phone battery kept running low and I was always worried of getting locked out as result. I'd stay with Billie and Max again, but I would not stay again in another top unit, unless I'm travelling very very light. Also—I hadn't discovered where the closet with the blow-dryer was hiding until my last day, so I think it would be great to add a note about it in the guide, or a label of some sort. Similarly, my room had these super useful USB chargers and they were hidden by a cart so I also didn't spot them until my last day. I did hear some noise from my neighbors, so keep that in mind if you're a light sleeper. I was pretty exhausted to be honest, so only noticed when I was up. The neighborhood itself is lovely and quiet.