If one of Rita & Helder's apartments in the heart of Lisbon is available, grab it! It is so convenient to everything. It really worked for my first, intrepid visit to Portugal. Because of the location and generosity of the hosts, I'll be coming back. The noise didn't bother me at all. With the windows & shutters closed, it was fine. I had ear plugs on the night stand and didn't need them. It was really wet when I was there and I spent a good deal of time in the apartment and was very comfortable, cooking and enjoying the lively street scene from above or occasionaly wandering into the middle of it. (It's surprising how few people lift their gaze to see you observing them.) I really enjoyed the street musicians playing a good variety of music and interacting with restaurant patrons. Don't let the empty tables across the way at Locanda Italiana fool you -- I had one of my best meals there and recommend it over the other places at your doorstep. At Rita & Helder's place, I slept well, eat well, was seranaded, watched artists work on their tiles. I had a great time and hope you do, too.