We had a wonderful time in Lisbon. Priscilia was great, she always answered to our mails very quickly and for her it wasn't a problem at all that our flight had a delay of 2 hours and she had to wait for us. Her welcome was very nice, we could ask her everything we wanted to know and she gave us a list of "insider tips" where to go for good Portugese food or for a drink.
The apartment ist super cute and comfortable, very clean and there's really everthing you need. It's 5th floor without an elevator, but this wasn't a problem for us at all - the view from the 5th floor on the Elevador de Santa Justa was great!
The location of the apartment is just fabulous, you can walk to every "tourist" place in town and don't need to take any public transport (except to Belém, but the train station to go there is also in walking distance).
We loved our stay in Lisbon and Priscilia's apartment and would definitively come back!