My wife and I had a great time staying in Vinciane's flat. Everything we needed was right there, or Vinciane would would make it appear in response to a post-it note. Flat was in very old building which is part of the charm, including the tilt to the final stretch of stairs. In contrast to the 500 year old beams, all else was perfectly modern, from shower to Nespresso machine.
Vinciane and Frank welcomed us warmly and thoroughly and got us off to a good start in Paris. We took advantage of the nearby bistro suggestion our first night and it was just right. Perfect location in the Marais, with a nice patisserie just steps from the front door to get us going in the morning. Can unreservedly recommend Vinciane's accommodation as a great base for exploring Paris.