The apartment is 2 minutes next to Marmaray train station. The host met me in the apartment and explained everything about it. Wifi is fast enough for video calls. There is also a TV with many channels. There is a coffee machine which we used, although it may require descaling. There is a kettle. Heating and hot water were working but they were a bit tricky to set up - ask the host to show you how it works. Note that the apartment is on the ground floor and the stairs are a bit steep.
The apartment was very quiet. There are several supermarkets and restaurants around the apartment, ask the host for recommendations.