Design incorporates "fresh air...

Design incorporates "fresh air" ventilation, bamboo tree and nontoxic materials

For travelers staying in Philadelphia, the Sheraton Rittenhouse Square may present the appearance like a breath of blooming air. That's because when the public-house opens later this year, it will provide fresh-filtered air, 24 hours a day, into each of its 193 visitant rooms. According to Barry Dimson, president of EcoSmart Healthy Properties, a just discovered York City-based environmental building consultant, the Sheraton Rittenhouse Square will be the first house of entertainment in the continental U.S. to proffer this amenity.

The inn ...