Great adventure. Love how it ties in to Barovia without the characters actually being transported to Barovia. Group I ran it for had players, not characters that had played Strahd, scared the pants off them thinking they were going to be sucked back through the mists!
Adventure is well thought out, very easy to follow, but still has plenty of options for the DM to adjust the adventure to make it a challenge for the party.
All in all, one of the, if not the, best adventures published to date!