Surprisingly OK Apartment for a weekend stay while exploring Lisbon.
After reading lots of reviews complaining about the noise next door, My girlfriend & I were concerned that she was not going to be able to sleep (she's particularly sensitive to noise when sleeping).
Yes, people are drinking at the outdoor area of the restaurant next door (nearest table that I could see through the window was some 30-40 mts away, they are behind a fence and there's a passageway in between both buildings)... and the sound adds up from all the tables, but this was usually finished or had died down by around 1am.
With the combination of the glass windows being closed, bedroom door closed, and that she wears earplugs at night, she was totally fine with that aspect.
It also helps that we went out and about ourselves.
The Apartment is centrally located, so it's possible to go to the Park next door and its Kiosk, the Time Out Market and many, many foodie restaurants in the area, Cultural Sites, etc., or a run or bike ride along the Tagus River.
The building has Security, and access is via keycard and keypads.