We enjoyed our stay. Mr. Erdem was very responsive. the location of the apartment was great. you can discover all important spots by walking or taking public transportation. is def easier than grabbing a cab :) we were 5 people - the apartment is definitely big enough for 6 people.
only drawback is that there is no elevator. not fun if you have big & heavy luggage and carry it to the 3rd floor. during weekdays you may request support for that.