We had an amazing time at Pablo's apartment! The apartment itself is beautiful, well equipped (nice, new kitchen; TV; heating; towels; cute, tiny bathroom etc.) and close to the city center (took us 15-20 min to get to the heart of Madrid [metro].
Pablo was the best host, very friendly and gave us great recommendations for cafes and restaurants in the neighborhood.
Highly recommend the apartment, muchas gracias Pablo :)!