I'm glad you have had a successful surgery and they got it all, that's great!
I did have trouble with my left side for several months after surgery with fine motor control. Making chords on, and even holding, a banjo was frustratingly difficult. However, with practice, exercise, and healing, it all got better. I have some facial issues, but they are essentially so minor they are not worth mentioning. I still have some speech limitations, but the only bad issue is that my stutter/stammer has increased. That though is also related to the fact that I keep thinking faster than I can talk or type.
The balance problem is likely more due to your vestibular nerve, not your cerebellum. Most of us have balance issues post-surgery. Those will generally improve with time and exercise. Walking, rest, and more walking, are the very best things you can do. Your body will need to learn to compensate. Vestibular therapy can help with this as well.
I was back to work in three months. That was after 32 hours surgery, two weeks in ICU with a slightly larger tumor. I was well in a year. I was weller the next year, and even more weller 3.5 years later. Give yourself time and take of your body.
-Tod