It isn't that big of a deal, but how much does it take to figure it out from the process of elimination. From the northern most lowest level upwards going clockwise: Doyles room, Basement up ladder Pantry, Kitchen, Bathroom, down hall past foyer and main staircase to far western end, Library, Livingroom with fireplace, eastern end of hall, back staircase, Utility room, to far western end of upstairs hall, MC Room, short hall western room is Luciele's room, eastern side is Vera's room, continue down hall to Mom's room, Moms bathroom, back to central hall at end access to attic via ladder. Outside, south out front doors to gate at front of property where we meet the Merchant, go west to edge of property and north to graveyard on western edge of property, go east along back of property to stables, go south from stables to area to meet Luciele for "Hide and Seek" and "tag". All from memory, it is not that hard. OK..... rant over. But seriously, the tour of the house at the beginning of the game should have left little doubt as to the location of the "mysterious" utility room...
How the hell are you old friend?