This flat was wonderful to stay in! I was there for 5 days in June. Obviously the view is wonderful. It was a full moon during my stay, and it hung just above the palace atop the hill - spectacular!
The a/c was critical during the hot Lisbon days when going back for a rest.
The location at Martim Moniz plaza is fantastic - a great, central location to get around from - with buses and metro and the famous Tram 28 just out your door. It's also easy to find your way back - or ask ppl how to get back to the square.
Its an easy walk to the water and to ancient Alfama... I'm so happy with my choice to stay at this flat!