PHILADELPHIA — Shannon Maldonado, founder and creative director of Yowie hotel, designs each of the rooms around a special something, something. Sometimes it’s a cool lemon yellow, rusty terra-cotta, or minty green accent wall. Other times, a plush cobalt or chocolate couch is the focal point of one of the boutique hotel’s 13 suites. Maldonado designs around a single element, like a funky rug with giant perforated holes that look like cute, oversize polka dots, surrounding it with coffee tables, beds, and lamps fashioned from natural blond and mahogany-hued wood. Overnight guests are stylishly…