It's written in the description that it's kind of a party district of Lisbon and it might be noisy, but it didn't prepare us to what actually happened in the slightest. Everywhere else in Europe what we usually see is after certain hour it's forbidden to make too much noise outside so night life moves to inside of bars and clubs. Not the case here, it's noisy with loud music in the street every day of the week until 1am and later, also looks like one of other apartments in the building is a "party rental", because we heard music from within the building (from above) until 3-4 in the morning.
It's manageable, but be prepared to sleep in headphones and with windows closed. Or, better yet, just rent this place if you want to go out and party a lot, it's indeed prime location for this kind of vacation. A lot of bars, clubs, great food, etc. No complaints really, but noise situation was not what we expected because apparently police in Lisbon doesn't enforce night silence laws there.