Great hotel. The center of Madrid. All the main attractions are within walking distance. Friendly staff. Clean and cozy room. The room has a TV, refrigerator, spacious bathroom, good breakfasts. The Sol station is nearby. You can come from the airport directly by metro (although with transfers).
I stayed here twice in Madrid, there were always excellent breakfasts, I was in 18 and 19, the view from the roof is not all the sights, but beautiful.
The only drawback is good audibility in the rooms, but the rooms have very comfortable beds and a bathroom.