The apartment is lovely, and an amazing location. If this is your first time in Lisbon, I highly recommend staying in Alfama.
All the positive things other reviews mention are true.
Miguel left notes on places to go in the neighbourhood, which was super helpful. He also accommodated my earlier checkin (as my train arrived earlier than the time specified).
The only note I'll add is that there's stairs to the apartment. But, it's Alfama, stair-land. So it's all good :)
Would recommend and stay again.