Tolgay's apartment is beautifully renovated and furnished. With two bedrooms and a living room, it is very comfortable to travel with multiple people. We flew in from different time zones and stood up/fell asleep in different times, so it was perfect for us to have separated spaces. The apartment has a heating, it can be adjusted, after a day exploring Istanbul in the cold, it was very nice! I am mentioning it, because in some regions of Turkey, heating is rare and the A/Cs are used to warm the rooms, which is not as nice in terms of air quality as a proper heating this apartment has. One of the highlights of this Airbnb is the roof top. We went there in the morning with a cup of tee to see the sunrise, it was magical.
We loved how Tolgay and his brother(?) decorated the space. You can see in every detail how much effort was put into it! For me it is a reason to stay with small businesses, because the love put into this place makes you feel special, not "room 1032". Everything is hand-picked: the pictures, cups and plates, glasses, lamps! Even the keys! White cover - for the white door, black - for the black one, red - for the pink door. This I am telling you as a designer myself.
Tolgay thought of a lot of things a traveller might need in the flat like a toothpaste and dishwasher liquid, they're towels, shower gel and shampoo too. We did not need to buy anything additionally for our stay.
The last thing I want to share is about Tolgay himself. He was very friendly, helped us with luggage, gave advise on restaurants and kept in touch with me. We had a good laugh too. So I highly recommend this place and the hosts.