Very nice apartment in a quiet neighbourhood, yet very close to liveliness. Everything looks brand new. The airconditiong (or rather the heater during my visit) worked very well. It is five minutes on foot to a metro station and fifteen minutes to the Instituto Superior Tecnico. There is a mini-market a few doors away, which is very convenient.
On the second day, there was an issue with opening the front door, which (as the apartment door) had to be done via internet on your phone, but apparently Georgina and Elisabete live nearby as they could come over and provide an ordinary key to the apartment and an access code to the building within five minutes. That solved the issue. Recommended!