Great location in Alfama (in the touristy and non-shady part, tucked away location close to the shops and viewpoints but you won’t hear noise from the restaurants). Taxi drivers seemed to have difficulty finding the street and Ubers can’t access the street so be prepared to do a 5-10 min walk up or down hill! As a female solo traveller, I generally felt safe in the neighbourhood and had no problem walking home at night from downtown.
The staircase to the flat is very narrow and steep. As I stayed during winter, the flat gets quite cold (I suppose common in continental Europe), but there is an oil-filled radiator I used to warm up the room. There is also limited hot water (again I suppose common in old buildings) so showers will have to be very short! The bed is very comfy, and bed sheets are of good quality.
Host was great and made good recommendations.