Tamer has a nice place but you are hosted by someone else there who I found quite unprofessional.
His friend smokes heavily inside and drinks heavily vodka and spirits etc. He was polite to me and chatty but it is not clean or hygienic to smoke heavily inside. All of my clothes smell like smoke and need washing. I had previously a head injury and inhaling smoke is so dangerous for me and leaves me feeling sick. He also drinks a lot of alcohol which can be uncomfortable as a woman traveling alone. He also offered to help me with stuff like access into his sportsclub then the next day ignore me: this affected how I plan my last day in Istanbul and was not profesional. He also advised me to drink the tap water which made me very sick. I am still sick now and missing much of my holiday.