OKLAHOMA CITY — Champion Hotels, an Oklahoma City-based hospitality operator, has acquired the 354-room Tower Hotel located at 3233 Northwest Expressway in northwest Oklahoma City. The property, which operated as a full-service Marriott hotel until 2013, will be converted into a 215-room Embassy Suites hotel within the next 12 months. The project will not only convert the hotel into a two-room suite layout, it will also involve the construction of an additional 95-room limited service property adjacent to the main hotel. HotelBrokerOne and NAI Global brokered the sale. The seller was not disclosed.