### Clue: Good guy in real dressing room (6)
### Answer: VESTRY 
 ### Explanation: Definition: dressing room
 ST(abbrev. for "saint",a good man,guy) ***containing***(in) VERY(genuine,real, as in "the very fool").
Answer:  The room in a church in which vestments (among other things) are kept, and presumably used as a dressing room.