Possible Clues:

• Where wine is stored
• Where one might get down to having a drink with a salesman, by the sound of it
• Where wine is kept, tradesperson said
• Room to have visitor? A couple of characters must be shifted round
• Wine is often stored here
• Store for wine, possibly
• Sounds as if one might make an underground purchase from this
• Bottom room where wine is stored
• Last place, as in standings
• Sounds as if one is not buying what is underground