Price - quality is good. Location is good close to Grand bazaar (tram stop are Cemberlitas or Beyazit). Hikmet is very responsive, answer my messages within 5 minutes. The apartment is in the first floor, the building has no elevator, but Hikmet and his son helped us to carry all the luggages upstairs and downstairs. He helped arranging transfers from and to the airport, and booked the whrilling dance show with a bit discount.
a bit of downside: the neighborhood is dark in the evening. uphill to reach the Grand bazaar (about 400 meters), might be dificult for older people or family with small children.