Holiday Inn Diamond Bar - Pomona, an IHG Hotel, is known for its clean and cozy rooms, providing a comfortable stay for guests. The hotel features a restaurant and bar with exceptional evening staff, praised for their amazing service and the quality of food served. While the rooms come equipped with a mini fridge, some guests noted the absence of microwaves and washcloths. The hotel maintains a refreshing atmosphere, with air conditioning in hallways and a pleasant smell throughout. Guests appreciate the safety of the location and the convenience of free parking. The hotel has also hosted successful conferences, with staff described as accommodating and helpful. Despite some minor issues, such as a stain on the iron and a leaking coffee maker, guests have expressed satisfaction with the resolution of concerns by the management. Overall, the hotel's great staff and quality services make it a favorable choice for both leisure and business travelers.