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freddy's houseboat deck
benches and shade structure over bed
water feature, and use of garden space under stairs
sick fireplace + benches
sweet water feature. comapct too, which would be good for your space.
outdoor shower? might not get much use... but
love the wall. great articulation of space and light.
pretty sweet bar, and fireplace. looks to be about your existing square footage as well.
check out the heaters above.