The place is exactly as described - very clean, not luxuries, but with all the one could need. The area is with narrow streets, as a picture from old times, where people are friendly and just after the second day you are already familiar with the owners of restaurants and shops the one usually visits.
The apartment is very close (up to 10 - 15 min walking) to all historical points and you don't need to use public transport or car. You can go to Galata bridge and for 60 lira to take a trip around the Bosphorus. Bare in mind that if you are with car the chances to find a free parking slot in the area are minimal.
And finally Yildiz is very helpful and ready to share with you the information that you need.