I was visiting Istanbul for the first time for (only) three days in the beginning of October '21. Therefore, I needed a place to stay that was both conveniently located, quiet, and comfortable. As a solo traveller, another priority was safety of course. My plans were mainly to explore the city and the beauty it has to offer to all. It seemed that Sefa's place could offer that. A practical note: the place is easy to get to; if you arrive at the SAW airport there is a bus that takes about 90 minutes and gets you to Taksim square. From there, walk south for about 10/15 minutes to find the place. Be sure to download the city map before you leave, as I unexpectedly did not have coverage in Turkey.
Sefa was waiting for me at his place and he showed me around his appartment, which has a living room, kitchen, bathroom and garden which you can make use of. It's very clean and cozy, and Sefa is very welcoming. We talked through Google Translate most of the time. Difficult but functionable!
During my stay there was nothing his apartment lacked. The bed is comfortable, the towels are soft and the coffee strong. Above all what I valued was Sefa's hospitality; he showed me around, offered help to set up the Istanbulkart (public transport) and spend time with me.
Naturally, I would recommend staying here.