My two companions and myself were very pleased with the location of Helena's apartment. We planned this trip to knock off an item to our Bucket List. We were not disappointed. Lisbon is a thriving place to visit and Helen's place is in the center of all places to eat, drink, and be merry. Internet was very valuable for making VoIP phone calls, finding places in LIsbon, etc...
We found air fans in each room and made good use of them, since the weather was on the warm side. You will hear lots of activity and noise around the apartment. However, the windows are noise proof and very quiet when closed.
I highly recommend this place for location, cleanliness, accuracy.
Obligado,
Douglas