Isabels appartement is a true gem to reside in. I stayed here with my partner for a couple of days, and it is great value for your money. The location is amazing, next to central Rossio square and public transport possibilities, as well as walking distance away from all the beautiful districts in town (alfalma, bairro alto, etc.). The appartment itself is more spacious than expected and has a lot of windows that let in light and a beautiful view. It also includes all the necessities for a complete stay. Mind that the appartment is located on the 4th floor without stairs, so don't come here if that is an obstruction. The only minor convenience was that the appartment only had small pans, but we made do for our stay.
Isabel and her husband are communicative, kind and helpful hosts. Would definitely recommend!