Absolutely recommend this place to fellow explorers.
Fátima is an exceptional host, made us feel very welcome and gave us tips about local area.
The flat itself is very clean, cute and homey. Fully functioning kitchen (to take advantage of Lisboan produce if you're into cooking), super comfy beds, really good shower with good pressure and an amazing balcony to have a cold one at the end of the day.
The flat itself is very nicely positioned 5 minutes walk from Torre de Belem in a very quiet area. Supermarket is 8 minutes walk, Pasteis de Belem 10 minutes walk (for an amazing breakfast) and if you need to get to more central parts of Lisbon there are bus stops very close to the flat. Bus 728 will get you pretty much anywhere.
Overall great experience and for this price and absolute steal so highly recommend it :)