It´s in the roof top of the Corte Ingles of Calle Serrano. You can have a a 3 star courses experience on a much lower budget. It isn´t cheap, the dishes are small so you have to eat at least 2 per person but is worth it.
The main Chef is very famous and he has a StreetXo in London also. The food is amazing, the plating is superb and they have nice cocktails also. Again: it isn´t cheap but worth the while. Everything I tried there was very very good. The music is a little bit loud, I think they make it on purpose so you eat quick and leave the table.
Get there EARLY. They don´t make reservations and there´s a line to seat, if you get there late you may have to wait on your feet for some while.
Mon-Th: 13:30-23:00
Fr-Sa: 13:30-23:00