In general the apartment was ok. It has a very central and nice location. You have a tram station where you can just jump in and reach all the touristic places. We do not recommend to drive too much with taxi, since Istanbul is horrible with the traffic, therefore the tram is way better.
Berna was available to write and to answer the phone if we needed. She sent us an information message with everything we needed to reach the apartment from the Airport.
About the apartment:
The apartment is on the last floor of the building and there is no elevator, which I think is normal in old building from the city.
The photos of the apartment are not very current. The apartment need s little bit of update with tiny things. For example the shower needs a fix, because the water comes from the sides of the pipe. The chairs outside from the bed - balcony are not the newest. The big balcony was missing the umbrella - Berna offered to replace it, but it wasn´t necessary since it is better to wait for the sun to come down. It is just too hot to sit outside during summer. During our arrival there was water in the fridge. We had coffee and tea available.
When we arrive the bed was done, but it looked like that nobody was there for quite a while and it was a bit dusty - so we had to dust off a little. At the head of the bed was also dusty. The bed was ok, but I think that it needs already a change.
We didn´t manage to start the TV and there was no handbook or guide how to do it. It looked like the plug was not working and there was no Aux cable to conect any other device. So, the TV didn´t work. We had WiFi, but no the fastest connection, but it worked so it was also ok.
We think that the place has a great location and potential, however it needs already a little update.