We stayed at Jorge's place twice in the same trip as we popped to Valencia for a few days during our visit to Madrid, we had a different room each time. The first room overlooked the square which was great as we could enjoy the city from our little balcony! It does get noisy but earplugs are provided, personally the noise didn't bother us. The second room was cooler as it was out of the sun, and quieter but still overlooks a busy street.
The flat is in a perfect location in a lovely area of central Madrid, plenty of bars and restaurants to explore! We found everything very walkable distance away, all the main sights and attractions as well as the airport bus stop and train station.
Jorge was super helpful and let us leave our bags at the flat before we checked in as well as in the day before our flight back which was really handy. The flat itself has a hostel-vibe which was nice, spacious and clean shared spaces! Would recommend for young travelers.