Very comfortable space for a few people. I was a solo traveler and found the place to be too big for 1. Beautifully arranged with the furniture and plants, great kitchen and walkable to everywhere i wanted to go. Loud at night due to the nature of the area, but also very very thin floors making neighbor noise very present. Nights were cold as there is no heating in the place, but I imagine that's quite common in Lisboa. 4th level walk up with no elevator means prepare yourself for a windy staircase.
One thing to note which is of no fault to Rodrigo is the downstairs neighbor is doing some renovation and using power tools as early as 8:30 am on weekdays, making sleep impossible in the mornings. Sat-Sun was very peaceful in the mornings. I'm not sure how long the construction will last, but it adjusted my sleep schedule severely.