The view of Lisbon you get from this place is absolutely stunning! I was in awe watching the sunrise and sunset everyday. Would highly recommend sipping the complimentary port wine while looking out over the city.
The place is perfect for a solo traveler or a couple. You have the entire roof area to yourself, which is much larger than it looks in the pictures. It's filled with plants and unique touches. It has a full kitchen, a small but full bathroom with a nice hot shower, and a very stylish living/dining space. Lucy was a great host and was very accommodating with issues that came up. I also appreciated the mid-stay cleaning for free during my 5-night stay here.
The location is also quite convenient, right by the Marques de Pombal metro stop along with several other bus stops. The surrounding area has a good amount of restaurants, cafés, bars, supermarkets, and mini-markets in walking distance as well. There's a nice guidebook that covers all the local recommendations in detail.
One thing to be aware of is that the street and the immediate neighborhood are a little hilly (like most of Lisbon), so be prepared for that if you have a lot of luggage. There is an oldschool elevator (like the one with the sliding metal grille door) that goes to the 4th floor but then you do have to climb up another narrow spiral staircase to get to the roof deck, so plan how you're going to get your luggage up accordingly.
The other thing to be aware of is that the wind whipping around at night on the roof can cause some random creaking sounds around the roof, so that might bother you if you're a light sleeper. I stayed here in May, so the weather was really nice and I left the sliding glass doors open at night which let in a cool gentle breeze.
Would definitely recommend staying here if you're in Lisbon! It's one of the most memorable Airbnbs I've ever stayed at.