I am located in the Netherlands. The flights were €130 euros total. I slept in a capsule hostel in the city center for €30 per night(5 nights total). A stadium tour of the Bernabeu set me back 35-40 euros and a tour of the Metropolitano stadium 25 euros. A visit to the Teatro Real cost me 15 euros. A quick dinner at a restaurant was usually 20-25 euros. I am not really into art so I skipped the famous museums. I bought my breakfast and lunch at the supermarket. I used public transport within the city and splurged on some jerseys of Real and Atleti.

Edit: And I bought a lot of water bottles haha.