PV Lusso lesson #1; always make sure the hot water valve is tightly closed before turning the machine on! I just walked into a huge puddle; the hot water valve must've been dripping for a few hours, long enough to overflow the small drip tray.
Having been spoiled by a plumbed in machine, I've got to relearn all the hard lessons, one by one it seems? I'll take the valve apart after the machine cools and see if the seals are shot or just need lubing.