We were 4 persons during 4 day .. Perfect balance.
About the flat : it's really good located(less than a minute to the bridge and the cathedral), clean, cosy. There is a balcony always sunshiny (when there is sun of course). There is one room with a bed, but even if the second bed is a sofa bed, it's confortable.
About the host : Francisco was very nice!!! We had wine and cheese when we arrived, he talked about everything to know in the appartement, the neighbourhood and the city! He gave us good tips about restaurant, bars..etc and was very helpful when we had some question!
if i can give you an advice : Don't hesitate to go to this flat!