Marco is a great person, he waited us for the check-in at 12 pm in front of the apartment, and in the last day he kept our bags there until the next check-in came. The place is situated in walkable distance to lot of things, including the train stations for Sintra and Cascais. It's an old neighbourhood, and kind of traditional. The only downside was that there stairs in the building are a little bit noisy, also if there is noise in the other apartments, you can hear it...
Thank you Marco for your hospitality! Lisboa was great!