I had the pleasure to stay at Filipe's place for just two nights, and I totally recommend it!
The room was perfectly clean, nicely decorated and with a comfortable bed, in a peaceful but also strategic area (just 10mins walk from the centre of Sintra, and close to several groceries shops), and the communication with Filipe was just... perfect! Always very timely, informative, and pleasant,
It has been a true pleasure talking to Filipe, as he not only is a truly kind and nice person, who takes a lot of care that his guests are comfortable, but also he has given me great tips on the amenities around to explore.
The common places as well (bathroom and kitchen) are being cleaned and disinfected everyday, so to make sure you totally feel safe (and at home!) when staying at this place.