There are two Diego de Almagro hotels next to each other. This one is not on Google Maps, and the airport shared transfer did not know it. Basically, you book tranfer to the other one, and then walk from there.
The reception does not speak English and does not answer Hotels.com messages. I called them about airport transfer and could not get any answer. I suggest that you book a shared transfer from the terminals for 10 USD. The transfer back to the terminals is free, goes every hour.
The room was basic, but OK for a night to catch a morning flight. The bathroom was in good condition. The breakfast was available from 4AM and was quite good.