Amazing location! Perfect house for a short stay in Lisbon! The street is very quiet in my opinion (considering the location). The house is very simple (bedroom, living room and a toilet/bathroom/kitchen space witch is separated by moving "walls" - in my opinion - a genius idea). I would say if you plan to cook your meals in the house it might not be the best option but it is possible as there's all that's necessary for it (just very small).
Had a great time in Lisbon! Thank you!