Location: Very conveniently located in South Loop. Close to finalcial district, the El, restaurants and many tourist areas.
Rooms: Not very large, but elegantly appointed. Bathrooms are very impressive with serperate shower and tub. Marble vanity, very large.
Gym/Pool/Spa: Second to none. The best health club I have seen in a "non-resort" Marriott property. Very nearly a full scale health club. Pool is large enough to swim laps. Hot tun is large as well. Spa is very nice though on the expensive side.
Restaurants/Bar: Bar is what you would expect in a JW property, upscale and chic. Restaurant is Italian and pretty good, but would recommend dining in city.
Concierge/Service/Valet: All live up to the JW Marriott brand. Will assist with directions, cabs, metro, tickets, reservations, etc.