For those considering this new hotel that haven't seen the trip report posted recently...you may find this post and the associated pictures of great interest...
BA Excursion to Seoul Trip Report post on Conrad Seoul
Looks a great place and the exec lounge seems to be very nice indeed...
I am very jealous indeed....although I didn't do too badly in another hotel myself on that trip
Hope the pictures and review CreativeBill wrote are of use and interest. @:-)