If the price was right, I would sell it.

I would set up a small hut, with food and water. I would go there from time to time when life got too busy, lay in a hammock, read books and engage in important endeavors like counting the feathers on each seagull that flew by and estimating the number of grains of sand on the beach.

I'd invite all my friends over.

I would call it "England".

If I had an island, I would do genetic experiments on animals there.