This is probably one of the most beautiful airbnb's I've ever stayed at. The view is absolutely amazing. And the hosts are extremely professional. Really great value for money compared to most hotels in Lisbon. Amazing all around! Don't hesitate about booking it.
There are a lot of stairs to get there, so if you have heavy luggage it can be quite inconvenient. The area is quite touristy too, but it depends on the preference. There are tons of nice restaurants in the area.