I would 100% live in this apartment. As it was, I stayed here for 2.5 weeks on business, so my comments are more about long term stays. The back terrace is just WONDERFUL and gets gorgeous morning light. It made it so easy to wake up every morning. Bed linens and towels are fluffy and immaculate. Joana, the house manager, offered to bring me new ones after a week but I didn't have a problem washing what I had and having sun-fresh towels. (There is a dryer in the machine as well, but I never had to use it.) Kitchen is equipped with basics for cooking (oil, salt, pepper) and a variety of pans. There is even tupperware!
The front of the apartment where the office and living room are get the street noise, but the back main bedroom is pretty amazingly quiet, especially given the numerous balconies that all face into the central area. I only heard neighbors (babies, dogs) a handful of times. The bedroom with the two single beds is in the middle and only connects to the office by a (locked) door, so I imagine it's pretty quiet as well.
The living room had lots of extra blankets and pillows for relaxing, and there's a space heater that I used on colder nights since the wall radiators can't do too much in an open space that large. TV with plenty of channels, including English-speaking ones.
Bathroom has plenty of counter space, good pressure, a nice mix of lighting (helpful when getting ready to go out), and lots of hot water.
The area is nice and full of many Indian/Nepalese restaurants. Get the momos from Kasthamandap! I never felt unsafe walking home, but be aware it is 1/4 of the way up a big hill and on the 4th (American) floor. The closest Metro stop, Arroios, is closed for 2 years for renovation, but Alameda is honestly not that much farther. There's both a Continente and a Pingo Doce grocery store within easy walking distance, as well as plenty of bakeries and pharmacies.
I'd come back in a heartbeat!