We were group of friends staying in Mafalda's apartment for 10days and we really enjoyed. The location is great, very central, proximity to the park is great bonus (especially if you are a bird lover:) Though you feel you are in the city - unless the windows are closed, the noise from the traffic is in two bedrooms quite heard.
Communication with Mafalda was great, she was very responsive and caring.
Apartment is clean and spacious (it's like a palace:) and stylish, but maybe if you search for super modern and newly equipped place, you would find some details which are part of experience of staying in an historical place (squeeking doors sometimes hard to lock etc..). But falling asleep under the ceilings like that is an unforgettable experience.
The ice-cream shop just under the apartment is a great bonus:)
We would recommend!