A very very nice Airbnb in the Alfama. With all the shutters open it's bright; we loved that all the windows open up for fresh air and views of the plaza and church in the morning.
Impeccably decorated with some genuinely beautiful and Lisbon-specific art.
Kitchen is funky but effective for everything you'll want to cook, however consider bringing your own stop-top moka coffee maker (cafetera) if you're not into drip-coffee.
Beds are very comfortable and queen sized, which is really appreciated, as are the quality linens and sheets. I slept better here than I have in a long time, even at home. The area is peaceful and the bedroom can stay plenty dark until even 9am! Lots of beautiful chairs and furniture in every room made it even more comfy and charming.
A few caveats to an otherwise excellent stay:
During our visit the Internet was on ADSL service, which wasn't even enough for video calls let alone working remotely from the apartment. Instead we ended up getting a week long membership at a fantastic coworking space about 10 min away – Heden (Santa Apolonia). Highly recommended!
It's very difficult to get groceries nearby (same for pescaderias or carnicerias). The tiny markets are okay for basics, but even getting bottled water is impossible at night because these markets close relatively early. If you're planning to cook much, especially any seafood, you may want to consider whether this is going to be an issue. I assume most people will be going out for all their meals.
Lastly, the apartment is right above a restaurant and next to a fado bar, so there will definitely be noise, smells, and actions on your doorstep and until around midnight most evenings. For some this is a bonus, for others, less so.