The apartment itself is quite beautiful and very spacious and, yes, the view from the balcony is great. The location of the apartment gives you the chance to experience a less touristy, more authentic part of the city. The ferry dock is withing walking distance, so it's easy to reach the European side, where you will probably want to do do most of your sightseeing if this is your first time in Istanbul. But if you want to spend the evening in Kadiköy, there are loads and loads of cafés and restaurants and clubs to choose from.
Thank you Handan for welcoming us in you home :-)