The Fitness Center at Sheraton Maria Isabel Hotel
The fitness center at Sheraton Mexico City Maria Isabel Hotel is endorsed by travel writers. Out of 7 professionals that we tracked, 4 acknowledged the fitness center, including Fodor's, Oyster and Gayot.
Sheraton Maria Isabel Hotel 
Fodor's
Oyster
Gayot
Star Service
Fodor's "The well-maintained guest rooms feature extra-comfy Posturepedic mattresses, goose-down (or hypoallergenic) pillows, and coffee makers, while the pricier Club rooms boast free bottled water (replenished daily) and access to the fitness center and Club lounge; rooms are currently undergoing a gradual renovation, due to be completed in late 2015"
Oyster "Guests looking for a more intimate, funky hotel Zona Rosa may want to consider Room Mate Valentina, which has a fitness center and free Wi-Fi at a lower price point"
Gayot "Down below you’ll find tennis courts and a fully equipped gym complete with steam rooms"
Star Service "The hotel offers an indoor pool to accompany the well-equipped gym in a glass pavilion"
