Overall, my experience was good, and if you are looking for a place to stay in Lisbon, I can recommend staying at this apartment.
Sofia's apartment is located in a great area in Lisbon: a 15-minute drive from the Airport, an 18-minute Metro drive from Terreiro do Paço, and a 13-minute walk from the Miradouro da Senhora do Monte. Besides that, there are a few groceries stores, a relatively big supermarket (Auchan) and several coffee places where you can enjoy a very tyipcal Portuguese breakfast or snack. The apartment, despite its simplicity, was comfortable, with enough space for a couple, a well-equipped kitchen, and a small bathroom. In my opinion, for a one or two-night stay, it is more than sufficient. Lastly, the communication with Sofia and her friend, who helped us with the check-in process, was smooth.
Sofia, thank you again for welcoming my boyfriend and me to your apartment. 😊