I stayed in a 3rd floor apartment, which I only realized when I got there. There's no elevator and the stairs are narrow, just fair warning. The check-in system was surprisingly easy and contact free. The apartment is beautiful, full of natural daylight and windows. There was also a very quiet AC in the bedroom. Small kitchenette with all the utensils. There was some espresso packets, but as a tea drinker I wished there was tea and sugar.
I didn't realize this about Alfama, since it was my first time in Lisbon, but the hills here are NO joke. This place is also in a historic restricted zone, so you'd have to walk uphill like 300 feet - which is not the easiest with luggage, cars are not allowed.
Other than that, I really felt at home there. It was really nice to take a hot shower after a long day exploring and to relax in the soft pillows and warm blanket. The view of the river out the window is also pretty great. Chiado shopping streets are about 20 min walk. I recommend taking advantage of the cheap Uber prices, to get places any further than a 20 min walk. Lisbon is full of little and big parks and squares, churches, souvenir shops. Loved it!