Francisco really is a super host. He was always quick to respond, and gave recommendations for good local places to shop/eat.
The location is on a lively street in Alfama and close to the Sé (cathedral) and Tram 28 stop. Walking distance to a lot of sites as long as you are good with hills and steps! The flat is much LARGER in real life than in the pictures posted and very clean. It can be quite noisy from the restaurants & street below at night if you are a light sleeper or go to bed early.