We stayed just under a week at Matt's apartment, and absolutely loved it.
Location is superb for exploring Alfama, and very easy to get to the station to travel further afield.
The apartment has everything you'd need, is very nicely presented, comfortable, and has a great terrace (which is a real sun trap).
Finally, Matt is an excellent Airbnb host-super helpful and very nice.
Would absolutely stay here if visiting Lisbon again. Thanks Matt!