I had a wonderful stay in this apartment. The views are excellent, the space is peaceful, and the location is quite good for exploring the city. Ana was also very nice and helpful getting me oriented to the city.
It's a bit of a climb to reach the building, but most of Lisbon is hilly so you've got to expect to do some climbing. You wouldn't have such a great view without the climb.
During my stay there was major renovations happening on the floor below, so future guests might be advised to expect some loud noise and smell (epoxy, paint, glue) until the work is finished - my stay was late January 2015. This is not a big deal since they only work during the day (about 9am-4pm) when you will be out exploring.