We - three of us - were in Lisbon for 5 days and had an awesome time and a very nice stay at Mario’s apartment. Everything - the communication was very quick and helpful before, during and after our stay, the friendly check-in in person, his tips of things to do in and around Lisbon, the very central location of the apartment, the cleanliness - were very good and we had a great time!
I highly recommend staying at this place if you want to have a great time in and around Lisbon for couple days!