As long as you put your hot tub on a solid base and can run electrics to it (unless you've opted for a stove-fired option) you can put it anywhere! Though it is always advised to use a RCD-protected socket and not an extension lead.
The area required of course depends on the size of the hot tub you choose; consider the circumference for the hot tub itself, plus additional access room.
Corner spots are good for providing a little shelter from the wind, however, having your hot tub right next to the wall of your home is probably too close. The steam that comes from the water may seep into windows and water splashed from the tub may cause a slippery walkway. You'll also want to avoid placing it under a tree to prevent leaves and debris from raining down while you're soaking.
There's plenty more hot tub ideas in our design guide too.