Yusuf's place was modern and charming, and a few minutes walk away from each key site of interest (i.e., Hagia Sophia, Blue Mosque, Suleyman Mosque, Basilica Cistern) in Sultanahmet. Erol was extremely helpful, and did his absolute best to share relevant knowledge with us whenever he could. The room's interior needed a little touching up, but nothing that would compromise the experience. We would definitely recommend staying here.