My girlfriend and I stayed in one of Erdal's apartments for four nights, and we had a great time. Leading up to our stay, Erdal was very approachable and would usually reply to any inquiries within a few minutes. Also, after having made a reservation she sent us a booklet with directions and sightseeing tips, which proved to be very helpful. The apartment was very clean, with great facilities. It's located very conveniently, just off Istiklal (the main shopping street). The neighborhood is quiet to Istanbul standards, and there's a bakery and super market right across the street. There was some construction going on in the building while we were there, which may have caused the power and hot water outage we were confronted with—such outages are pretty common in Istanbul though. Overall we were very satisfied with Erdal's place, and will definitely stay with her again when in Istanbul.