Depends how you set it up. We have a tall fan that sits on the floor. We place a chair in front of it with a frozen 1.5 L bottle of water (2 on really hot days). We let it oscillate sometimes, and leave it static sometimes. Depends on what we're doing.

With a proper window/blind schedule, it helps keep the room much cooler on the hottest days than without the ice bottle. Just be sure to put down towels to catch the drips, and try not to let the fan's electronics get wet.