Cannot recommend Julien and his flat highly enough! We were only in Paris a few days but we felt right at home and Julien was very welcoming - flexible in meeting us, provided a great local guidebook, left us water/juice/cakes (yummmm) and made his computer and wifi available. The location was absolutely perfect - walking distance to Notre Dame and near the heart of the Latin Quarter. We arrived on the Eurostar from London and left from Charles de Gaulle - both on RER B just 5 mins walk from the flat. Julien was very communicative and made the process very smooth. We look forward to staying again next time we're in Paris!