Christophe place was very nice and we had a wonderful time. The place is very small but enough for a couple, specially if you plan to spend most of your time around the city. Be aware of really steep stairs (is very common in the buildings and houses of the area - Alfama), also take in consideration that the place is not accesible with a car or taxi, so in case you have a lot of luggage you have to walk for about 250mts from the Fado Museum.
Alfama is a very lively area and also very nice to walk around and discover places.