This place is excellent! Close to all the tourist sites, restaurants, shopping and more. The apartment is located in a quiet plaza so it's peaceful and has a great vegan restaurant nearby. We stayed in the month of March, the tree out-front was still bare so there was a great view of the city. Skylight in the kitchen keeps it well lit during the day. Main bedroom has a large comfortable bed with plenty of storage, extra blankets and hangers. Living room has a large couch which can double as a bed. My husband and I work remotely and we found no disruption in wifi service and we were able to use our firestick.
Kitchen is well equipped. The toaster oven worked great in place of a full oven. Space heaters warmed up the apartment and we found most of the time we only needed one running to keep it comfortable. Second bedroom was not used during our stay.
Washer/dryer was a major plus. Side note its best to wash the clothing hang dry and then toss in on the dryer setting to fluff. Clothesline off the main bed room and plenty of hangers and clothespins. The fans helped with this process.
Things to keep in mind. The entrance is located on a walking street. You can not drive up to the entrance, you must walk down from the road or up from the larger plaza. Limited parking nearby.
We did not need a car our entire stay. Lots of stuff close enough to walk to including the castle which was about a 11 min or less walk. Train/metro, bus lines and trolley 2 minute walk. We used Bolt other times with ease for cheap.
This is on the third floor. Stairs are a bit steep but we got used to them in only a few days. Lisbon in general is full of hills and stairs anyway so it's just one more set before you get home.
We stayed for a month and we were very comfortable. Would highly recommend it