Staying at Cristina's place's been amazing. We've spent there 4 days and it really is a place I would recommend for anybody looking for an authentic Parisian experience. It is cosy, really small, but you don't need much more when you have the city literally at your doorstep. Very approachable hosts, and always ready to help or recommend great things to do/see/eat. Next time I visit Paris, this will definitely be the first option I'll check to stay!!