As stated, I also have an o/s sink and stove combo. I bought a shower head/hose combo that simply snaps in the faucet and presto, plenty of opportunity to shower off at the beach. Available through any camping store.
Love it versus my older rv where it had a dedicated shower on the wrong side of the rv and a storage area so tight it took 3 men and an elephant to get the hose back in and door closed.