This apartment is in an excellent, very central, location. It is easy to walk to lots of the local sights and there are plenty of shops and restaurants nearby. It can get a little loud outside at night, because of the nearby bars, but with either the window closed or earplugs in, it is not a problem.
Just be aware that if you are GPS-ing to the apartment, use the FULL address, as there are more than one of this street address in Lisbon. Found this out the hard way :)
The apartment is very cute and we would definitely stay here again!