I previously reported on Cortijo Sotillo in reference to it's use in Day of Anger, but at the time I had not realized it was also used in Death Rides a Horse. The location is of course most famously known as "the small house" in A Fistful of Dollars.
The finale of Death Rides a Horse takes place in the fictional town of El Viento. The exteriors of this town were filmed in Tabernas, however this particular interior was shot in at Cortijo Sotillo in San Jose
Below is a comparison of roughly the same shot from Death Rides a Horse and Day of Anger (click to enlarge)