Elsa and Rui are very nice and helpful host. They were easy to reach and tried to solve very issue fast. Before my stay they provided me a huge list of nice recommendations about the area. You can easily check in via a key box. The flat is located in an old building which means the house has some historical charism but also some peculiarities. All in all you will a have nice stay in the older part from Lisbon in a full equipped, lovely furnished apartment with very friendly host. You just should not have a problem with walking the two stairs. I definitely can recommend staying at their flat.