The staff the ULIV Cibeles front desk were very friendly, and spoke both Spanish and English, which was very helpful. I would chat with them each day on my way in or out.
My room was very clean, quiet, and comfortable. The kitchenette was very useful for doing my own cooking. A large Sumesa supermarket is a 10 minute walk away.
The building is located on a quiet street, close to Avenida Insurgentes, the main thorougfare. The area felt safe when I walked around. The Metrobus (Durango) station is only a few blocks walk away, which will connect you to the Metro bus and train network. which is awesome!
Also a few blocks away in the direction of Fuente Cibeles you will find lots of restaurants and a cervezeria.
Overall, I was very happy with my stay, and would gladly stay again.