Keep in mind that any damage due to neglecting this will be your responsibility at your cost as per the lease.
To avoid the hassle of dealing with broken pipes during the winter due to freezing temperatures, ensure you drip both HOT and COLD water lines (at an average rate of 5 drips per minute). Especially if there are systems next to outside walls. Also, make sure that you have adequate heat and open the doors underneath all sinks that have water lines supplying it.

IT'S ALL ABOUT PREVENTION
Frozen pipes can leave you without water in the worst weather. And cost you a lot to repair. But with a few simple steps, you can easily preserve both your budget and your peace of mind.