Erstwhile warehouse space never looked this classy, with gleaming wood floors, elegantly arranged sofa and cocktail table seating and a kitchen-sink art piece covering an entire wall in a colorful jumble of paint, wood pegs, stones and mosaic tile. Intimate lighting and sheer curtains tame the timber ceiling and iron beam hugeness--15,000 square feet on two floors--while leaving plenty of room to shake it to the dance grooves, hang out or lose yourself in the well-dressed downtown crowd.