The flat is very central and has all the basics you need. i'll just warn you that you're in the middle of Bairro Alto which is central but also where all the bars are located so the flat is very noisy/loud at night. It is important to mention if you have a light sleep. The apartement is also very basic, not really furnished as it's made for holidays rentals.
That being said, the flat is convenient, it's close to most good restaurants, there is a luggage room that is useful if your flight is late in the day and the communication (check-in/check-out) was really easy with the team.