When you log in inside a house, the roof will show and you have to move in order to make it vanish and see your character. If you click the ground in any point, you can select the items in the bottom floor. If you drop an item on the ground and in the bottom floor there is something, the item is considered as drop on this item, if there is a container, the item will goes inside of it. Veteran rewards ankh (the one who resurrect you) has the blood visible in every floor of the house. Some items with a particle (like brazier and beehive) shows the particle on every floor you are, no matter where they are placed.