Taeyeon seems like an introvert's ideal roommate.  The two of them could just stay in their rooms all day and not be bothered.  She once again talked about her famous homebody status when she appeared on MBC FM4U's 'Sunny's FM Date' on October 8.

Sunny stated, "There is no homebody like Taeyeon.  What in the world do you do at home?" and Taeyeon simply responded that she would play with Tiffany's dog and greet the day and evening.

Sunny went on, "Taeyeon does not come out of her room.  Even when I greet her at her house, she goes, 'Oh you came?' and would only greet me before going back into [her room]," asking her please to leave her room.