http://www.worldsexarchives.com
The guys who post to the Cuba section of this board are the pro's when it comes to travelling to Cuba from the US or Canada. Hotels, car rentals, tour guides, apartment rentals, group hookups, customs/immigration issues, getting laid 5 times a day, dining, up to date conditions reports.. its all there.
And if its not there, you can ask, and in a day or two it will be.
The admin charges like $5 a month for access. Its well worth it, even if you just want to read for curiosity value.
I have no financial interest in this site or any other relationship with it, except as a satisfied customer.