Really amazing location, just down the hill from St. George castle, and just up the hill from some of the best restaurants in Alfama. It is on a trolly street, but you really only feel it as a low rumble. Could be an issue for light sleepers, but my partner and I had no problems. Apartment is clean and spacious, and I could imagine sharing it with another couple with no issues. Again though, the location is just incredible, and enables you to walk to basically anywhere in Lisbon within 20 minutes.