Our family of 5 (mom,dad, grandmother and 2 teenage children) spent 3 wonderful days in Lisbon. The stay overall was very good. The apartment was clean, well stocked in terms of the basics, TV and WiFi worked well and were easy to navigate. The location was very convenient, easy walking to restaurants, shopping and the historic sites. The one thing you should know about staying in Bario Alto is the bar scene. During the summer when the windows are open, the noise from the street carries into the apartment well into the night. The other thing to consider is the three flights of steps to the apartment. Be prepared when carrying luggage or after a long day of walking the hills of Lisbon.
We had some travel issues and Maria and her team were wonderful and life savers. They helped us book new reservations, called people she knew in the travel industry to help us out and were compassionate to our troubles.
I would very much recommend staying here.