First of all, Mehmet is a really nice person, he is always taking care of everything we need and giving us good tips and info for places to visit, cruise trips over the Bosphorus, where to buy souvenirs, transportation, etc.
The apartment is really nice, impecable, with all you need for your stay as you can see on the photos. The location is very good, near on walking distance of important places to visit like Ayasofya, Blue Mosque, Gran Bazar, Topkapi Palace, etc. You have to use some stairs just around the apartment to go to this places, but is you don’t have any problem to walk, is perfect. Near from there is a very nice street with many restaurants and mini markets, I recommend you to visit for example Babilonia restaurant, very nice food, environment and the service is great! Recommendation, bring with you local money (Turquish Lira), sometimes credit cards devices not working (at least they say that), so, better to pay with cash.
Another recommendation, don’t think about Uber! Is a problem on the airport, there is no WiFi on your arrival and if you bought an European cellphone chip, is not going to work there, you can take a taxi (just take a screen capture of the address) is about 30 euros from the airport Sabiha Gökçen on the Asia side, or Mehmet Can arrange private transportation for you for 50 euros (from this airport, less from the other airport on the European side), believe, it worth it! The airport is a mess, the language doesn’t help and we had a lot of problems with the transportation, so if you don’t want to have a bad moment and wants someone waiting for you just when you arrive, say yes to Mehmet option! BELIEVE ME! The same to get back to the airport.
And well, enjoy Istambul! Is a totally different culture and place to visit! I totally recommend you the cruise trip on the Bosphorus!
Sorry for my bad English, is not my primary language, but I tried to do my best! Warm regards from Mexico 🇲🇽