I can highly recommend staying at Diogo's and Ricardo's apartment. It is the perfect place for a Lisbon stay if you want a place that's very central and very easy to get to/get away from. The apartment was clean and exactly as advertised. Diogo responded to all messages very promptly, communication was great before and during our stay. On our first morning we realized the hairdryer that belongs in the apartement was missing, and as soon as we told Diogo, he went out and bought one, it was on the table in the evening when we got back from our day trip. Perfect! Two minor comments: The two bedrooms that face the street (pedestrian area with restaurants and hostels) are not soundproof. It might get a little loud on the weekends, so bring earplugs if this bothers you. But it's a small price to pay for staying in the middle of things, and it's something you would expect in a big city. So it's no need to worry, just come prepared;-) The second thing is a recommendation: If you need to store your luggage somewhere after check-out, there are luggage storage stores (don't bother going to Rossio station, there are only about 20-30 lockers there and they are most likely going to be taken). One store is rather close to the apartment, on Rua dos Bacalhoeiros 4 (1st Floor). It's not cheap, but very convenient, which gives you more time to explore some more of beautiful Lisbon! All in all, this is a wonderful place to stay, and I would definitely stay here again if I ever came back to Lisbon with a group of 4-6 people.