Cozy apartment in great location (quiet street close to metro, tunnel, Istiklal street and Galata tower). It is located in Beyoglu which is aprox 20+ mins walking distance from Sultanahmet (depends on you), but I recommend ALWAYS using public transport - Istanbul has cleanest metro, tram and buses that I’ve seen in my life.
Apartment is well equipped and building has passcode security on main door. Hosts Ece & Volkan responded extremely fast (within minutes) and were both polite and helpful with all my questions and requests. I recommend this apartment (host has more apartments in Beyoglu which look just amazing as this one).