SHE finally said “yes” to rehab, and sullied songstress Amy Winehouse means business. The beehived singer didn’t go to a “spa-hab” facility, but instead checked into the more serious Causeway Retreat on Osea Island in the U.K. Our source told us the “gaunt-looking” rocker is shelling out $20,000 a week, but the fee includes access to “a recording studio on the island. A lot of singers go there for a ‘retreat’ or to record music and get a little help.”
