It was really easy to get in touch with Sylvia and arrange our arrival time. She was very understanding when our train was a bit late. She met us at the door and gave us a very thorough tour around her apartment. The apartment itself is certainly cosy, but in a great location near the Gare du Nord (we walked over with luggage no problem) and Montmartre. The bed is a sofa bed, and is fine for a few nights even if the mattress is a little thin when folded out as a double. Even though the space is cosy, there is space for everything, with a lovely little bathroom and kitchen. The wifi is decent, with 15mb/s down and 1 up.