Violaine is a very nice host and everything went smoothly from start to finish: easy communication, flexible about schedules, reactive when I had questions. Her appartment is nice, recently renovated, bright and quiet, with a tasteful cosmopolitan decor. All useful cooking stuff was there (oil, coffee, tea, etc.) and the kitchen is well equipped. It's all of 3 min walk to métro Télégraphe on line 11, which drops you directly in the Marais or along the Seine in all of 10 minutes.
So I highly recommend this cool place, very good value for Paris.