Margarida goes above and beyond for the people staying in her place. She arranged pick up to and from the airport. Even when we were leaving at 5am on New Years Day, she texted me at 5 to make sure the ride was there. You won't meet a host that cares more about your experience in Lisbon.
The location is excellent, close to everything - the castle in the Alfama, 20 min walk to the main square by the water, 10 minutes to the train to take out to Sintra. I would absolutely stay at her place again when we come back.