You do get what you pay for. In this case, a solid 3-star hotel.
If you're looking for the Ritz, this isn't it, but it also is not a seedy old motel either. It is a solid 3-star, as advertised. We were surprised by the negative reviews as we also are Groupon shoppers. The Groupons clearly state the rules, i.e., bring copies with you and adhere to check in/out times, and what type of room was purchased. We were always greeted with friendly smiles and a willingness to help, by all the ladies at the front desk and Irvin too. We were told that Groupon holders would not be relegated to any certain floors or rooms, but in effect we were shown only the fourth floor with specific available rooms. We found this a bit strange since the rodeo had ended the day before, and many guests were departing as we arrived. It was not at all full or crowded during our two-night stay. We did not have a car so did not use the free parking with the Groupon, and we only ate one breakfast there, rather than two, because it was a ho-hum meal, but with good service. 
Our criteria for hotel rooms is plenty of hot water and towels, decent bedding, good tv and quiet. Thankfully the hotel was fairly empty so quiet was not an issue but certainly would be when full as the walls are paper thin, and street noise could be heard from our room on the fourth floor, as well as bathroom noise from above.
The mattresses/pillows could use an upgrade but did not prevent us from sleeping. Also we were told this room and others facing the street had newer tvs. Really? It was as old as the hills, the complete opposite of a flat screen, and only showed 15 channels, not the two dozen or more listed in the room's information booklet.
The room does provide a coffee maker, an ironing board with iron, and a few toiletries, with a sign stating if an item has been forgotten, such as mouthwash, it would be provided upon request. We did not need anything on that front. In addition to two double beds, there was a desk with chair and another lounge chair and small table. Lighting seems quite dim in the hotel, especially the elevator, but again not a deal breaker. The room/bath were clean, which is very important as well.
The Groupon did state that two bottles of water and two bags of pretzels would be provided, but only the latter was. On the second day we spotted a woman from housekeeping in the hall and asked about the water, to which she responded, we're not to give any water. Then she relented and gave us two bottles. We didn't bother with the pretzels but it was nice to have bottled water.
The business center consists of a Mac computer and a printer right off the lobby. We saw the pool but did not use it and did not visit the fitness center. Steps leading down to the Riverwalk are just across the street, which is convenient to the hotel site.
Front desk staff volunteered to call a taxi for us when needed, but neglected to place the wake-up call, which we did not request, they offered. No big deal there but could be for someone who really needed that service.
It was a very good deal with a Groupon and overall it was ok. But would we stay again? Probably not, but one just never knows. Just understand that you will get what you pay for, from friendly staff members just trying to do their jobs.