Miguel replied fast to all my inquiries. The check in was not made by him personally but by a woman called Joana. I arrived 2 hours earlier than expected but after some calling and waiting, I could check in, which was very flexible and friendly from their part.
The corridor at the entrance of the building is pretty shabby, dark and run down but the stairs are clean and wide, the appartment is located on the third floor. The apartment itself is spacious and with natural light. The main bed (the only one I use) is comfortable and everything was clean and neat. Everything works just fine and the interior is cozy and warm. The apartment looks exactly the same as in the pictures. In the apartment there was no information on sightseeings and good restaurants in the neighbourhood which is quite common to be found in airbnb accommodation. I just received a map of Lissabon from Joana but that was it. Basic cooking ingredients like salt, pepper and oil were either present.
Unfortunately I had a very bad experience during my stay. I got a 99 euro fine because I did not pay for parking my car on the Guarda-Mor street. This was very unfortunate because I was badly informed by Joana. By checking in I asked her where I could park and she told me I could park there and that it was for free. It is of course my own responsibility to find out for sure, but I trusted the information provided by the people you believe know best. This was a bad experience in what could have been otherwise a very pleasant stay. Although this does not in any way makes the apartment less recommendable, I think, the quality of this accomodation as airbnb experience could be greatly improved if Miguel makes sure (he told me he would) that this kind of information is correctly given to the guests.
The points of improvement are basically in the little details in the house (like information of points of interests and local tips) and in the care provided in the check in process but on the whole this accommodation is pretty good.