Since their debut in 2007, the 9 members of SNSD have been living together in a high class apartment in Seoul. Since there are only 5 rooms
i think this one not quite right...
when first debuted (or sometimes around debut time) they lived together in a not very luxurious apartment.. that time there are only 4 rooms and the room arrangement was :
1. YoonA,SooYoung,TaeYeon
2. Tiffany, SeoHyun
3. Jessica, YuRi
4. HyoYeon, Sunny
its around Genie (korean one) that they moved to the luxurious one with the new roommate arrangement
CMMIW