I'm not sure about the price, but what we called a Flotel was two boats tethered together on the bank of the river. The rooms were small cabins, smaller than any cruise ship I've been on, but they were comfy. It was real fun for us kids to sleep on a boat instead of a Hotel. From what I've heard, budget accommodations are hard to come by in Moscow and this was a good alternative. They treated us like diplomats and fed us top quality food (caviar, beef, and fish). Our food was, however, rationed heavily. No seconds! And to a 13 year old caviar is grodie, and salt fish can only go so far. I, on the other hand, enjoyed all of the food and helped my fellow travellers clean thier plates.
I doubt that it is still there