Hotel O Regional Science City Lucknow Formerly Rainbow Gold Inn is offering accommodations in Lucknow. With a shared lounge, the 3-star hotel has air-conditioned rooms with free WiFi, each with a private bathroom. The property provides room service, a 24-hour front desk and luggage storage for guests. Guest rooms at the hotel are equipped with a seating area and a flat-screen TV with satellite channels. All guest rooms include a desk.