what to put ?

Be careful with this idea, as the Phyllostachys group of Bamboos do clump up and 'walk'. They can be somewhat invasive, so take extra care in placing them - well away from the pool and hot tub liners! Then they'd look great.

Were you thinking of the bamboo as a screen perpendicular to your fence? If so, what would be the dimensions of your planting area? Given that, we can suggest other screening plants. Which would be at that end, the pond or the pool? You might, of course, try a lily of two ....... lol

Not for screening was going to plant it in the far right hand corner. The area that you see will house my new pool and tub and will have decking upto and around it and we intend to use the decking timber to cover the outside of the pool and tub so its all built in so i will have corners to fill. The pool is going in the middle as far back as we can get it and the tub is going where you see those plants on the floor. As for the lillies there is a chance that i might use them !!!!!! lol