It's almost ridiculously easy to trespass into this downtown luxury hotel's gorgeous swimming pool. Stroll over to the north elevators, push "T" for terrace level and exit onto the massive pool deck. No card key necessary (yet) and nobody bird-dogging interlopers. We've done it. More than once. There are comfy lounge chairs, free towels, shady areas with tables and lots of greenery. It's like SoHo House without the attitude, right in our own Arts District. Just be subtle when you go, OK? Don't ruin it for the rest of us.