Answer:
small land in water.
I have a mouth on my head and eat everything.
I'm many people's favorite place even though many don't remember their stay. You'll love to come but hate to leave if you get cold use my sleeves.
A little pool with two layers of wall around it. One white and soft and the other dark and hard, amidst a light brown grassy lawn with an outline of a green grass. What am I?
What is full of holes but still holds water?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.