The location is perfect, just a minute away from the famous Istiklal street. There are lots of restaurants and small grocery stores nearby. It's close to the Sishane M2 station and a funikuler to Kabatas, where you can connect to the T1 line.
The apartment was just recently renovated (still smelled of painting which wasn't perfect but that's understandable).
There were a few issues which I hope the host is going to fix. Instead of a TV, there's a projector, which was nice... but it was completely unusable in the daylight because only 2 of 4 windows had shades on them. There's also an issue with the electrical sockets: there is just a single one in the bedroom (and it's far from the bed); a single free one in the kitchen; none at all in the hall and the bathroom. It was really inconvenient and I had to buy my own extender to get more sockets in the places I needed them (to turn on the washing machine, for example).
Hopefully, all of this will get fixed as it's fairly easy.