We had a great time in Marias flat. Everything is like described on the pictures.
The room s are big and our little boy (1,5 years) had enough room to move and play. There is a fully equipped kitchen, we never found so many useful equipments in a Airbnb before. Even plastic containers for takeaway and plates/cups for children. You get used to the stairs after a while, carrying the buggy in the third floor was no problem for us. For the problem with the front door we found a solution. You have to move the key up and down fast while turning it to the right and the door opens. Otherwise it may take some time, not very comfortable due to the highly trafficked position of the entrance.
The best pantes de nata we had are just around the corner. I guess a famous Cafe looking at the many people queueing.
Thanks for all.