Could not beat the location. The apartment was wonderful. There were some problems related to cable TV, phone, internet service. The staff at Guest Apartment Services got in touch with the cable company as soon as we told them. They provided us with an iPhone and a wireless router while the problem was resolved. There was a problem with allergy to scented linens and they very graciously supplied fresh unscented linens. They even have their own door to door service for transportation. It might have been a little bit more expensive than a taxi or public bus, but the extra expense was worth it when their driver navigated the tiny streets of the island to pick us up promptly at 7:30 am so that we could make our flight.If you are going to Paris after a long journey then you must stay for more than a few days. If you are staying more than a few days then you must consider an apartment. For an apartment no location could be better than Ile Saint-Louis. It is quiet but also in the center of Paris. If you are considering an apartment you need the support of a service such as Guest Apartment Services. They know the neighborhood and they are there when you need them. Throughout our stay their attitude was cheerful and helpful. We will miss them until we see them again.