We had a great time!
The apartment is exactly as advertised and the location is hard to beat with lots of nice bars and restaurants within a minute of walking.
The hosts were super communicative and helpful. They organized a transport from and to the airport, gave us a tour around the apartment and the neighborhood with lots of good tips for places to go, and generally went out of their way to make sure we had the best time during our stay!
The apartment is small and simple, but equipped with everything you need and the canopy of origamis really gives it a special touch.
Since there are various bars right across the street, it can get a bit noisy during the night, but closing the windows and shutters helps with that.
All in all, I can only recommend this place to anyone who wants to get a feeling for what Lisbon is about!