The 316-room Langham Chicago hotelopens on September 10 just steps from the Chicago River and the Magnificent Mile of shopping on Michigan Avenue. Accommodations range from standard guest rooms, priced from $395 per night, to the $6,000-per-night Infinity Suite, which comprises a master and a guest bedroom, a grand piano, a fireplace, a dining room, and views of the river. Additionally, the hotel has a bar, a restaurant, and two lounges, as well as a 22,000-square-foot wellness center with a spa, gym, and indo…