Cristi is a lovely and very creative person! It was such a pleasure meeting her! She welcomed us late in the evening (after 10pm) and (beforehand) sent us detailed instuctions about her home.
Her home is located (almost) right in the centre of Barcelona - just few streets away from the Sagrada! There are metro stops and bus stops close to the place and it's really easy to get there from the airport!
Her place is modern, minimalistic, the room is very cozy - it is not big, but it has a whole wall of buit-in storage you can put your clothes in and a balcony to check on the street below. There's also a wall hangers where we put our coats and an electric heater we could use. The bed is super comfortable and it was really hard to get out of it! Slept like a baby every day.
In short words:
Pros: close to the centre, comfy bed, really nice host, great tea, clean bathroom and bedroom, privacy
Cons: can't lock your room, cold bathroom (in the morning in winter months)