Alberto's place is very well located for airport access - only about 10 minutes walk from the arrival terminal and in a quiet neighborhood. The room is clean, well stocked with things like fruit, wine & water, as well as a TV and a good desk if those are needs of yours. There is also a full kitchen in the apartment. Only problem was the room was pretty cold (stayed in January), and the space heater didn't really do anything.
Alberto responds quickly to messages (Portugese only), though the check-in could have gone better as I was left to wait in the dark hallway with no one answering the door (Alberto said he would be there but wasn't). He showed up later to have me fill a form with personal details.
All in all it is a good, clean and quiet place to stay, esp. for airport transits, and the price is right.
Cheers!