Im female living alone in 3+1 house, I rent one of my room for rent sharing.
This area is very peacefull and my room is silent and which you can go every where easly. This is modern side of Üsküdar, not like the center of Üsküdar.
This is historical place and also close to everywhere. (kadıkoy, sirkeci, eminönü, moda, beşiktas)
metro, metrobus, marmaray, ferry, minibus, bus, any of them is so close, you can check from the map. (Selimiye)