This apartment is perfect to explore Lisbon - it is situated only 10 minutes walk from the Alfama district, but the district of Chiado itself has so many beautiful coffee shops and restaurants. The apartment is a beautifully renovated old building with so much character and was sparkling clean. I would highly recommend staying here!
I would just like to note that if you are a light sleeper make sure to bring earplugs - the streets below can be noisy at night due to being so central, and as the building is quite old it is not soundproof from the apartment above it. No fault at all of the owners and just something to note before staying!