Isabel's place was perfect. Very nice, clean, and in a perfect spot in the city. Isabel greeted us when we got there, told us about all of the best restaurants/bars/monuments/museums and general sights to see. She even had a nice bottle of wine waiting for us upon arrival. I absolutely recommend staying here.
Side note: Lisbon is a beautiful city. On my trip, I went to Barcelona, Seville and Lisbon. Lisbon was my favorite!