The Pool at Philadelphia Marriott Old City
The pool at Sheraton Philadelphia Society Hill Hotel is referenced by professional travelers. Of the 8 publications tracked on TripExpert, 7 endorsed the pool, including Frommer's, Fodor's and Travel + Leisure.
Philadelphia Marriott Old City 
Frommer's
Fodor's
Travel + Leisure
Gayot
BlackBook
Oyster
Star Service
Frommer's "The property is popular among business travelers and families -- kids are particularly fond of the splashy indoor pool"
Fodor's "The glass ceiling over the indoor pool provides an outdoor feel year-round"
Travel + Leisure "There is an indoor pool, a brick courtyard, and an on-site restaurant serving American cuisine such as New York strip steak and Cobb salad"
Gayot "The beautiful, glass-enclosed, heated swimming pool area is popular year-round, and guests are welcome to use the business center with free Wi-Fi, sauna and fitness center, featuring cardio and weights"
BlackBook "No real bells and whistles, but sacrifice hipster cred and what do you get? Room service, a gym and a pool"
Oyster "The hotel has 17 meeting rooms, a business center, and a Club Lounge, plus an indoor pool and hot
tub, a restaurant, and a Starbucks"
Star Service "There is also a wading pool and whirlpool, and the gym is well-equipped, a welcome perk for active travelers"
