Very cool experience! The rooms are quite compact, but given the nature of the place that was expected. It's a very convenient location for travelers (right in between two major rail hubs, Gare Lyon and Gare d'Austerlitz), and we loved the views and ability to hang out on the deck watching the city and the river. I don't know that I'd pick it for an extended stay in Paris, but it's a great option for a night or two.