Great apartment to stay in! I have lived in Madrid in the past and know the area very well. The apartment is in the heart of Malasaña, very close to shops/restaurants/bars/public transportation. Although it is centrally located, it is not on a main street so it doesn’t get noisy at night. Constantine’s apartment is not only beautiful but well equipped (kitchen necessities, towels/toiletries, washer, refrigerator, etc.). Constantine is also a great host! He made sure to contact me through WhatsApp to make sure everything was in order during my stay. I would highly recommend staying at Constantine’s apartment and would stay there again if I ever come back to Madrid.