We spent a very good time in Lisbonne, we really appreciate the flat with the parking in the heart of Lisbonne, if you decide to rent a car, it's definitely a very good point !!!
To answer of some interrogations for the future people who want to stay in the Betina's House : yes it is located near to a restaurant, so there is some noise but it's the same if you stay in another street in Lisbonne. The evening start quite lately around 10:00pm, it has a certain charm. We really feeled confortable, all was well explained, and Betina always answered quickly to our questions. We think that some cook's ustensils are missing (cutting board, strainer, a kitchen knife) but all the rest was perfect.
I recommand it, and I will choose the same apartment if I want to come back !