Please note that the bottom of this sink is flat. When you install the drain, it rests on top of the bottom of the sink, so it is raised slightly from the bottom of the sink. A small amount of water may not drain completely out of the bottom of the sink. For most of our customers, this has not been an issue. They either let it evaporate or wipe it dry as needed. This issue has been corrected in the newer models of the vessel sink. That is why this one is at such a great price!!