We stayed three weeks in Rui's apartment, all we can say is WOW!
His place is clean and organized, and the location is particularly ideal: close to but just outside some of the busiest neighborhoods. The street is quaint and very quiet. Within few blocks, there are wonderful local and touristy places to eat, have coffee, and buy groceries. The views from the windows and the balcony are beautiful. The birds love sitting in and singing from the trees just in front of the apartment. When we return to Lisbon, we will first ask if this place is available.
Rui himself is very professional and nice, and he responds right away to any questions.
We highly recommend this place for those who want to enjoy Lisbon, stay in a quiet neighborhood, and be able to walk everywhere.