This apartment is really quite amazing and perfect. Though the listing says it is in a central area, you can't really understand how perfect the location is until you are there...within walking distance of almost EVERYTHING. The apartment itself is very spacious and modern (almost fully furnished and decorated by IKEA) and very true to the pictures. We stayed as a family with a 1 year old baby but it would also comfortably fit 4+ adults. The host was able to provide us with a crib and a high chair (that was purchased just for us!) and the apartment turned out to be quite suitable for a very active baby...lots of space and sparsely decorated so you don't have to worry about the baby breaking stuff. Also, there is a neat little shelf area in the closet that served as a changing table for us!
There are plenty of towels and a lot of space to unpack your belongings and clothes.
A couple of things to note during our visit. After a couple of days, there started to be a strange sewer like smell from the back bathroom area. The toilets and bathrooms were clean but the smell still lingered. Also, while we were there, the aircon wasn't working. This was really disappointing for me as it was an important reason I picked this place. There was little mention of this and seemed no effort to fix it while we were there. I didn't push the issue since it was cool at night but a couple of fans would be nice in this type of instance.
Also, the host is very hands off. She is super responsive over email but we were let in by a neighbor (Alex) and basically left alone. We were told to contact him if we needed anything and he was also pretty responsive but mostly we kept to ourselves. That was actually totally fine with us as we weren't seeking too much guidance but I remember reading many posts of other places on airbnb where the hosts were super helpful with information and planning itineraries. I'm sure they can be helpful if asked.
Those small things aside, I wouldn't hesitate recommending this place to everyone. If I ever go back to Lisbon, which I hope to, I will definitely stay here again.