Go up into the room and collect the chests here. (Tent, Aegis Shield, 2750 Gil, 18010 Gil, Vorpal Sword, 800 Gil, Healing Helm, 3400 Gil)
After you've collected all the chests on this floor, go down and up the stairs. On floor 2, there's a bunch of chests in the middle of the room. Make your way around the "maze" to get them. The 10 treasures are: 8135 Gil, 7900 Gil, Thor's Hammer, 12350 Gil, 13000 Gil, Cottage. 7600 Gil, Sunblade, 10000 Gil, Dragon Mail) Go up the stairs to the north. Go down and into the little room. You'll be at the: