We have just returned from a long weekend in Lisbon staying in Rui's lovely house, it is even nicer than in the pictures, beautifully decorated, and Rui is very friendly and hospitable. The pool is a plus to go for a swim in the morning or after a day's walking around the city.
The bus from the main square of the palace goes to the centre and is quite frequent. A taxi is the only option back in the evening after dinner, which is easy as there are plenty and the fare back is reasonable.