Location - in the middle of Alfama, great for City Break. Bed - Firm but comfortable enough. Shower - good. Kitchen - well equipped. Host - super friendly, helpful and eager to please.
Note - Steep narrow staircase to flat and steps up to bedroom area mean it would not be appropriate for people with restricted mobility.
Also Alfama is not a quiet place so the flat does get a lot of street noise but it's not a problem if you are exploring the city!