Zenit Abeba is located in a very nice area in Madrid, Salamanca. If you can walk for 40 minutes or more, you will be within walking distance of places like the Prado Museum.
The staff is very friendly, especially Aurea, if I remember her name correctly, who was great with suggestions on where to visit, etc.
The room we were given was ok. It was clean and the bathroom was a good size, however, the room was a bit too small for two people. We were not sure if it was a room for a single guest or if the simple double rooms were all that size. It was also a bit noisy; we could hear other guest's showers...
We had lunch at the hotel restaurant on the day of our arrival and it was very good!
Overall, it was a good stay for two days.