Good apartment in a decent location right next to the tourist information office. Walking to either commercial area where food and stuff is is a little bike because you have to go uphill or downhill. But this is Sintra - you cannot escape hills!
I did encounter a bit of a smoke smell in the apartment. So if you are sensitive to smoke like I am, do ask if Mariana has gotten it cleaned and aired out or otherwise be a little wary.
The apartment ceilings are also a bit low so be forewarned.
Mariana was mostly responsive and helpful.