Before or our stay in the apartment I received an e-mail that contained information on how to get there (metro station & ticket info) & how long it would take us. There were also some tips where to get food and what there's to do. I really appreciated this.
There is a heater in the apartment that we plugged in in the evenings. With the heater on it was never cold in the room where we used it, but it was a little bit cool in the other one (nothing long sleeved clothing like sweatpants and a hoodie couldn't fix)
Overall it was a great stay in an awesom city and I would recommend it.