The apartment is in a great location - cafes/breakfast places, bars, restaurants and the seafront are all within walking distance. It is on the smaller side but equipped with everything you need for a city break. Paulo was very welcoming and super helpful when we arrived. He was very happy to give us tips where to eat, how to buy transportation tickets etc. There is also a good selection of restaurants, bars, maps & things to do provided in the apartment along with other information such as WIFI password. He was very quick to respond via email if we needed anything & he let us store our luggage at the apartment after check out which made it much easier for us to enjoy our last day in Lisbon.
The only "negative" would be that the walls are very thin so it can be noisy depending on your neighbours at the apartment next door.
All in all a good place to stay in Lisbon!