We had a great stay at Pedro's and Sergio's place. The apartment is located in the very city centre very close to the metro Baixa-Chiado and the Praça do Comercio. There's a very nice breakfast place right across and many good restaurants close by. It's an old building, but the apartment's furniture, kitchen and bathroom are very much up to date and you will find everything you need. Since it is a maisonette, it can get pretty warm during the day, but the numerous windows make it easy to get in fresh air in the evening. We never met the hosts in person, but the communication via the Airbnb app was super pleasant and effective and we also got some good suggestions for visiting Lisbon. Overall, highly recommended for your stay in central Lisbon!