I am looking to get the wine needed for Corinna's summoning quest and I already denied Afrasam for his quest earlier. I read in another post that I should look for the wine in his room, which room is his? Whatever room doesn't have occupants didn't have the wine. Thanks

Did you talk to Pierce and find out he sold his last bottle exquisite wine to Anthrabert? If so, the wine should be in his room (west side of the Ducal Inn, north room). Hit the Alt key, in case it is obscured by the wall or door.

Did you check up around Mpenzak's cart? IIRC someone said they found the wine there.

If you can not get the exquisite wine, Corrina will accept a different bottle of wine.