Irem booked a Transfer at the Airport for us, which worked out perfectly. The location of the apartment is very close to the center and there are amazing restaurants for dinner or dessert right around the apartment, which my boyfriend and I really liked! A few downsides were the disgusting smell in the apartment which lasted the whole stay and the low water pressure in the shower. The check-in and check- out worked without any problem and Irem booked reservations at restaurants for us, whenever we asked her to. Since our flight was in the afternoon but check out is at 11am, Irem offered us a secure space to leave our luggage, so we didn't have to carry it around and enjoy the last few hours. The bed wasn't super comfortable especially since it was two beds just placed next to each other, so the gap in between was a bit annyoing and uncomfortable. Last but not least the apartment seems very safe and we had an amazing stay in Istanbul.