Location of the apartment is great - you can walk to most of the places in European part of the city. It's also good while traveling from/to an airport - Havabus stop is at Taxim square, 10 minutes from the apartment.
Hasan is very responsive and help to deal with local officials and businesses if you need it. He provides transport card and give valuable advices on where to go.
Please come and enjoy this cozy romantic place perfectly located and charming.