Alberto is a fantastic host! I arrived very late, and he was kind enough to meet me outside the door to welcome me in, which was a very warm touch. the amenities (fruit, two kinds of water, juice, candy including chocolate, crackers, and red wine!) he's placed in the room was bountiful and beyond generous. the room was fantastic. the mattress, the pillows, the fan... everything was clean and very comfortable.
since I arrived so late, he was kind enough to give me a bit of a late check out and held my bags while I explored the city. I hope to come back to Lisbon and when I do, I would absolutely stay there again. you won't be disappointed.
one tiny thing that has nothing to do with Alberto or his hosting is that the 15 mins walk from the airport is true; it's not a long walk, but it is also not all flat and smooth. wheeling or carrying luggage uphill on the stone sidewalks might be a challenge for some. thankfully, a cab is just a few bucks and can easily transport you comfortably to Alberto's place.