Along with a restaurant, this smoke-free hotel has a 24-hour fitness center and a bar/lounge. Free WiFi in public areas and free valet parking are also provided. Other amenities include a coffee shop/cafe, spa services, and a seasonal outdoor pool.
Mercer Madrid offers 61 air-conditioned accommodations with minibars and safes. Each accommodation is individually furnished and decorated. Beds feature premium bedding. A pillow menu is available. 40-inch Smart televisions come with cable channels. Bathrooms include bathtubs or showers, bathrobes, slippers, and hair dryers.

This Madrid hotel provides complimentary wireless Internet access, with a speed of 100+ Mbps (good for 1–2 people or up to 6 devices). Business-friendly amenities include desks and complimentary newspapers. Additionally, rooms include irons/ironing boards and blackout drapes/curtains. A nightly turndown service is provided and housekeeping is offered daily.

Recreational amenities at the hotel include a 24-hour fitness center and a seasonal outdoor pool.