If you want to be in the middle of Alfama, this is the flat. We stayed here for a month in March and we had everyday breakfast and lunch in the balcony overlooking the river. We had been working remotely, as well, and the place is good for that (although maybe it would be good to have a couple of chairs woth backrest rather than only stools). Working from the balcony has also been good for us (wifi is great!).
Bedroom is very cute and although the windows there are small, it still offers a good view for lazy wake-ups. Kitchen-wise, it has everything you need.
In terms of location, super close to the river and 10min away from Praça do Comércio, which is a great place to chill. There’s also the pantheon next to the flat, with some cool cafes and a great roastery nearby (copenhaggen coffee lab, worth checking).