Absolutely perfect location and very spacious apartment! Everything was as described and Anibal was a perfect host and provided us with all the help needed. We arrived late at night and the check-in was very flexible. Also the communication worked flawlessly. Small balcony to the street side and a nice terrace in the back were a nice bonus; so was the TV with lots of channels. Rua do Poco dos Negros can be noisy in the day time if you keep the windows/shutters open, but we really enjoyed to watch real Lisbon life. At night time it was quiet though.
Near the apartment there are nice restaurants, shops, small supermarket, cafes and Bairro Alto and Bica bars. You can find everything you need within walking distance and for further sightseeing we used mostly Uber, which is very reliable, fast and usually even cheaper than a taxi or the metro (for 3 people). The area is safe and we enjoyed the local restaurants, cafes and especially getting our fresh bread and morning coffee from the downstairs local cafe.
We stayed for 10 nights and definitely recommend Anibal's place if you are looking for a nice and excellently located apartment to get well rested before the next day hill climb;)