I had to stay one night in Istanbul and have previous stayed in an apartment of IstanbulPlace.
So I contacted them and everything was easily arranged.
I arrived a little late to the apartment but Ozge was ther waiting for me. She opened the door for me and showed the apartment.
For a couple the apartment comes highly recommended. The interior is so that you have a sleeping part and a day part. The decoration and furniture is super.
But you need to be aware that this wonderful apartment is on 5th floor. For me no problem.