Great place for Columbus Marathoners
I booked a superior king room through Expedia this past spring for the Columbus Marathon (as I was running the half). It was important to me to be able to walk to the start and the finish and the location and the price made the Red Roof Inn ideal. I was a bit nervous about staying at a Red Roof Inn since I joke to friends that a Red Roof Inn is as close to camping as I'll get, but I did my homework here on Trip Advisor and decided to give it a try.
When I checked in, I was greeted by friendly faces who informed that breakfast would start early and checkout would be late because of the marathon. (Conversely, I have stayed in other cities at 4 star hotels and never been treated this well as a visiting runner. The desk attendants instead ask why there are all these people with sneakers in their lobby and categorically decline requests for even a slightly later checkout.) 
The room was okay. The hardwood floor and modern furniture created a nice atmosphere. There was a slight moldy smell in the bathroom which didn't seem to be related to poor cleaning but instead the need for sealant/caulk to be applied around the tub. The wood veneer furniture was also showing some wear (water marks, rings, separation). The microwave and fridge were excellent to have on this trip and were very clean. The coffee tasted yucky, though. 
Parking was a bit of a problem. Although the website says it is $10 because it's at a premium, it was sold out when I arrived and the parking fee was waived. I was instead advised to park in the convention center lot. This ended up being a lot more because of the special event rate for the race expo ($7) and then the hourly/daily rate started after it ended. It might be worthwhile for Red Roof Inn to negotiate with the parking lot operators for these type of situations.
I definitely would stay here again for the marathon and recommend it to others who are looking for convenience, friendliness and value.