Hotel location is good. Reception staff were helpful. The only discomfort is the soundproof of the room. The opening and closing of the guest door next to your room can be heard clearly, including drawing of the curtain, etc. These sounds were so clear and close that could give you a fright even when you were already asleep. However, after one or twice experiencing such sound, you should be able to overcome it and able to sleep well for the rest of the nights. This soundproof problem is quite norm for many hotels. Anyway, overall, I enjoyed my stay at Mercure Madrid Centro.