We spent a great time in Irina's house! It's small but it has everything you need, it's clean and it's in a perfect area to visit lisboa! Just two consideration: because it's in a pedonal area, if you rent a car you have to park it 13 minutes walking from the house, and due to a new small restaurant under the house (you have to try it, people are very nice!!!) every time you get into the house you smell a very strong fish flavor ;)
However it was really a great accommodation and the hosts are really really nice!