Place is in good location, with 2 mini grocery supermarkets nearby (20 meters), across boulevard is main walking street with fancy old style tram, you probably saw pictures online. Inside the apartment everything you need or anything you can imagine, it's like your second home, what ever you think, it is there.
Staff on duty is always online, and response time is really fast. I'm not sure, it might be that someone there in the office 24/7, however I never walk out at night )))
It is warm enough in cold season, we had few issues with central heater, however there is A/C with heater, it can make room hot very fast. You should not have issue with that.
This place is like small hotel, with lots of services, luggage storage, cafe, tours. We also had a mini breakfast with our stay, which was a nice additional to the stay, especially in the morning, when you don't want to cook or go anywhere for breakfast.