The three of us stayed at the apartment for 5 days total and it felt like our little home away from home in Lisbon.
Arriving late (00:30) on tuesday and leaving again on sunday, we had no problem checking in late; Nelson's cousin got us settled and gave us the grand tour of the place. Perfectly clean, comfy beds, all the necessities you need (toaster, washing machine, blowdryer, you name it they have it) and easy acces as the entrance is on ground level but walk to the back of the place to find yourself two floors up. Waking up here was relaxing, opening up the windows to find yourself starring over rooftops and observing people in the street below. All telephone numbers needed for contact were right by the door for easy communication (also perfect wifi!), maps of the city were available if needed and we even got a second set of keys to split up if needed. Checking out later than expected was again no problem at all.
The apartment is walking distance from the monumental/shopping centre of Lisbon. Barrio Alto and all it's liveliness right around the corner, an epic look-out over Lisbon right down the street and if in need of public transportation to Belem you just walk downhill (5-10 min) to grab the train. If in need of a supermarket you will find a tiny one in the same street and around the corner a bigger one. Also the Mercado da Ribeira is found just a 5-10 min walk downhill. Breakfast/Lunch is no problem if you're staying in this appartment. Go find Dina at Cafe Orion (corner of the street) for a big selection of yum or just walk futher down for a padaria Portuguesa. The real Portugese breakfast treat aka Pastel de Nata can be found at Manteigaria, to be recognized by the big line outside, also 1-2 min. away from the apartment. So if you are looking for a place where you can comfortably stay with 4 people and have everything nearby go for this one, you will not regret it!