My apartment is in central place, Mecidiyeköy. Close to public transport like subway or bus. Walking to subway takes about 12-15 minutes. Also there is a bus (number66) that goes to Taksim. It is close to malls such as Profilo, Cevahir, Kanyon... Also, there are a lot of small markets around to shop.
I live there when there is no guests. So,It is a safe apartment and neighborhood.
I do my best to turn your messages, hope you can find what you looking for :)