We stayed here while attending a convention about 2 blocks away at the Hotel Mision Carlton. Hotel Estadio was convenient and inexpensive. The front desk staff were very nice, and they securely checked our bags for us at 7 AM when we arrived but before we could check in yet. The room was small and simple but clean. They bed was a typical Mexico bed (fairly firm) but it was NOT the worst I have ever stayed on. Pillows are way too large and hard, though! The bathroom had a small shower only, which was fine, although the shower head sprayed every which way except down. We were very busy each day so we never even used the TV or restaurant on site, but the breakfast smelled good each morning. There is a Walmart very near by which is great for convenience. It is also super easy to catch Uber from here for rides.
My biggest complaint was on our last day, there was a penetrating smell of vehicle exhaust throughout the hotel, including our room. This was the only day it happened, and I don't know why. There is a parking garage next door which may have contributed.