My wife and I only stayed 4 nights but found the apartment location and setup to be very good. It's in what we would call a heritage building but the unit has modern conveniences like heat and a dishwasher added. You are close to all public transit including tram 28 which is a real bonus as a tourist in Lisbon. Dozens of restaurants and a couple of major supermarkets within 5 min of the condo. Well equipped kitchen and comfortable furniture. Good natural light as as well.
Carlos met us at the condo and provided a great introduction to the condo and surrounding area. He helped us cart up our luggage as the condo is on the 3rd floor and there's no elevator. We didn't meet Jesus in person but he did reach out to ensure we were satisfied with the condo and to ensure everything was meeting our expectations. Very satisfied with the communication.
They also provided breakfast for our first morning which was thoughtful.
The only thing I think potential guests should be aware of is that it is just stairs to the 3rd floor in the building and we could see getting in and out of the shower being a challenge for some people with more limited mobility.