I arrived on Friday and check out on Sunday, the front desk personnel was very friendly and kind, he made my check in process smoothly after I had a really bad day, when I should arrive in 2 hours from Valencia to Madrid, but due to some accident, the train stopped just 5 min before my arrival to Chamartín and at ended up to Atocha after 1h 20m waiting, almost the same trip duration from Valencia to Madrid.
I really love the location of this hotel! It's hidden into a very nice and quiet area, and the tranquil environment and surrounded with full planted trees give a really calm atmosphere.
There is a Carrefour Express at 300 mts which opens until 23h, the street where Carrefour is, there is also lots of nice restaurants, dining out is not a problem. The metro station Gregorio Marañón is near by, everything is very convenient and easy to reach. The hotel is also eco friendly, the guest should bring their own amenities, I like this strategy, but the hotel can help to provide the necessities if the guest needs it too.
The breakfast has plenty varieties, the ham and cheese selections are really good!
I might stay in this hotel again in my next trip to Madrid!