The main languages spoken in Madrid are Spanish and English. While Spanish is spoken more, there are lots of tourists from the UK and other parts of the world who speak English. Many people in Madrid speak English as well so they can communicate with travelers.
The euro (€) is the currency used in Spain.
A bottle of water costs about 60 euro cents ($0.66).
The best meal I had this week was popcorn chicken and french fries from a Spanish restaurant called "100 Montaditos" (100 Little Sandwiches). As the name suggests, this restaurant has more than 100 sandwiches. Customers can create their own sandwiches with different combinations of toppings. This was the best meal because I ate outside with one of my friends and enjoyed the sunshine.
This week, I listened to violin music in the metro (subway) station. On my way to school in the morning, there is a man who sometimes plays classical on his violin.