The best of the apartment is the location: right in the middle of Lisbon, you can go by walking to any part of the city. Although, you must take into account that it is located on a 5th floor with no elevator, and it can be a little bit tired to climb the stairs , even more if you have been the whole day walking the city. Besides, as it is the top floor, the cealing is inclined because of the roof, and if you are tall, it can hit your head if you are not really careful (but that is part of its charm).
Also, it is really well connected by public transport: it has a Train Station (Cais do Sodré) right across the street. And if you go by car, you have a free parking area 12 minutes walking from the house.
Other thing that we loved was the view from the window: you can perfectly see the Tagus River, the "Ponte 25 de abril" and the "Cristo Rei" across the river.
We didn't get the chance to meet Ana and Hugo, but they were really helpful giving us the directions and flexible with the check-in hour, we are really grateful!