I went to Lisbon with 2 of my friends. First great advantage of the apartment is its location : right at the center of everything but quiet at the same time. It is well equiped and clean. Hugo has been a great host. Even if he is not available, he has people around immediately available to answer you. Check in and check out were done very easily, with flexibility. Perfect apartment. I highly recommend it!
Quick info: If you come with babies, note that there is no elevator.