Writing this on behalf of my daughter, who was staying at Andy's:
Andy's house was perfect for my stay in Lisbon for a month. The location was awesome because you have really good connections to public transport. Although there is no elevator in the house, you get used to climb the stairs everyday quickly. Once Andy did a meet-up of his guests (who were staying a little longer as well) in the street lobby, provided some food and drinks and showed us around in the nightlife. This was really cool to get to know other people. Andy was always up for a little chat when he had time and he helped me whenever I needed some advice. He even provided me a fan, because it was hot during the nights. So all in all it was the best choice to stay at Andy's and I would definitely come back!