My husband and I have spent 4 days at Helene's place and absolutely loved it. Having lived in Paris for a year, I can say that this is the dream location for every tourist. It is just perfect! As the picture shows, it is located on the backside of Notre Dame with a view on the Cathedral and the Seine to die for. We hardly ever used the Metro as everything is so conveniently close. Helene replied to all my questions immediately. We were greeted by her mother who showed us the apartment, there were fresh flowers, she offered us coffee and had prepared maps with restaurants in the area they can recommend, closest shops, best ice cream in town at Ile St Louis (promise! ). She also very kindly invited us for dinner which we unfortunately couldn't make happen as we already had other plans. The only thing which bothered us in the apartment was the smell of cat pee. Luckily it was summer and we slept with the window open. I thought it was very friendly and accommodating that I could leave my luggage until the afternoon as my train only left at 6 pm. Metro and RER are very close. Can highly recommend!