If you want to be in the heart of the old quarter of Lisbon, this is a great location to stay. It's close to the train and water side, with bars and restaurants right next to the apartment. From here if you want, the more modern city is just a 15-20 minute walk. Of course being central means there is some noise from the bars and people on the street.
We appreciated the added touches, like providing a bottle of wine to enjoy, and basics like dish and laundry washing liquid. Kitchen was equipt well enough to do some cooking but keep in mind it is the old quarter so supermarket stock is minimal but still we enjoyed breakfast in this apartment. It's spacious so enjoyable to spend time in and windows open right up letting sun and breeze in.
Our host was easy to contact and very helpful, even giving recommendations for the next parts of our travel.