I may recommend Zeynep’s apartments, we enjoyed staying there.
Zeynep was very helpful and responded fast. She provided to is access to private parking which was very useful.
Location is nice - 7-10 min by walk to Marmara and to Bagdat street.
Apartment is not big, one room is closed. In kitchen you may find everything you need.
Please keep in mind that there 3 construction areas around so in the day it is may be too noisy.
For short term stay this apartment is good!