Holiday Inn Express in OKC off of I-35 is clean and modern. Maintained extremely well. Although it's located in somewhat of an industrial area, the parking is off-street and between the hotel and interstate. If you really want a quiet room, ask to stay on the street side away from the highway. If you want to keep an eye on your vehicle (not that you really need to), stay on the highway side. We were on the highway side and slept just fine, even with traffic noise.
Staff members and guests were all pleasant and friendly.
Hotel has great access to downtown, Bricktown, Deep Deuce, OK Capitol, and OU Medical Complex. Only 10-15 away, you can get there by I-35 or S Eastern to Reno then north.
The complimentary breakfast is one of the best I've seen with 2 types of eggs (scrambled - nice and fluffy - and omelets), a breakfast meat (1st morning was turkey sausage patties, next was crispy bacon), biscuits and gravy, oatmeal, cold cereal, Chobani yogurts, juices (cranberry was sweetened with Stevia), pancake batter, muffins, bagels, bread for toasting, muffins, and the most decadent cinnamon roll pastries. I noticed that several guests were in out-of-town construction crews. Note to self: when construction crews stay at a hotel that serves breakfast, you know that the breakfast is gonna be great!
Shout-out to Sofia, manning the front desk. She was so welcoming, efficient, and helpful!! She got stuff done that another front desk staffer didn't.