Catherine met me personally on arrival - in spite of my being late - and was a very helpful and attentive host. She gave me a full introduction to the apartment, along with many recommendations for good local restaurants, shops and services - a wonderful host! The location in St. Germain is absolutely 10/10 - you cannot find a better spot in Paris to be, if your preference is for the kind of genuine character, historical ambiance, and amazing proximity to everything you could want. I had a truly memorable stay there and would eagerly return again. The only cautions are concerning the realities of staying in the top of a 350 year old building - stairs, dodgy plumbing/hand shower only, and a very limited kitchen (fine for breakfasts, but not practical for real cooking). The ambiance and aesthetics make up for this to those who value these more. Loved it.