Very well located in the historical center of Sintra, an old style apartment with all the modern comfort (air conditioning, comfortable beds, modern bathrooms, real fridge, ... and a balcony - at least in the apartment we rented, not all apartments have a balcony). Being in the historical center of Sintra as the huge advantage of being in a fairy tale place (both monuments, building and nature, quiet and extraordinary view) and the disadvantage of having to walk up and down and not being close to supermarket, shops other than souvenirs, ... But the neighbor of this apartment, Vera, is running a taxi company and is more than helpful. In a word, was a really great stay.
The only minus (if at all) was that the water is heated by gaz bottles that are inside the apartment, which we are not used to, so we were not sure it is 200% safe. Would there be an oven in addition to the microwave, it would also be a plus for families.