Sergio's location is great. Just one block from Puerta del Sol, great tourism attraction and many restaurants and dining locations. Also, very close to Gran via street, which have a lot of stores and dining places. Sergio's place is wonderful, small but have everything that you need. For US costumers you will need adapters to charge cell phones, laptops, etc. but is very easy to buy it there, though. Very close to the metro station. Walking distance from Plaza Mayor, the best sangria ever!!!