Will never return
My family and I have been staying at the Quality Inn & Suites Airport for the past 5 years for the Indianapolis 500 over Memorial Day weekend. The hotel service and rooms have gotten consistently worse each year and we will never return. Originally, the hotel was perfect. The price was decent considering it was a specialty weekend. The location was convenient to access the track with a short drive. The continental breakfasts were a huge selling point --- hot items (waffles, eggs), yogurt, cereals, breads/muffins/bagels, fruit, hard boiled eggs, juices, tea, coffee. The rooms were sufficient for what we needed (decent beds, hot showers). And one of the things we appreciated most was the lobby area where my large family (some years we had 35 people staying) could congregate to play games and visit. 
This year we reached a breaking point. Yes, the price of the rooms declined but the breakfasts were awful (no more yogurt, fruit, or hard boiled eggs). Our room keys didn't work and new ones were required daily (sometimes many times per day). One room was entered when the do not disturb sign was on the door. The lobby was HOT, almost too hot to even sit in and visit (even after complaints were made about temperature). The front desk made a scheduling error and told our party that one of the rooms had to be vacated that day (they did correct this mistake but made it seem like it was our fault). The rooms have not been upgraded at all. The TVs are old and the remotes didn't work or the TV would randomly shut off. The duvets had holes in them. 
On the plus side, the hotel transportation provided to and from the airport is excellent! 
This hotel has a lot of improvements to be made for us to ever return. We already booked a nearby and much nicer hotel for next year!