We had a fantastic time in this apartment - we didn't know much about Lisbon before coming, but this area was actually our favourite after some exploring, and all the restaurants and shops we wanted to visit were a few minutes' walk away. It's on what must be one of the most photographed streets in the city (cobbled stone hill with trams going up and down, with the river on the horizon), and it was probably the best in terms of location out of all the Airbnbs that we've stayed in (we loved everything else about it as well!).
We were allowed to check in early as the guest before had left earlier, and there is a place to leave luggage 2mins down the street if you need to leave your things after check out. Only about 20mins from the airport (and a very affordable Uber ride), and just a great area of town. It does get noisy at night as people drink and socialise right on the street, but we didn't find this to be a problem and slept soundly every night. The facilities are perfect, there was even a pocket wifi that you could carry around with you to use when out and about!
Thank you for an amazing stay!