Hannover is the type of team that doesn't do too well on the road but is great at home.
They've lost 3 away games, to Bayern, Leversuken, and Moenchengladbach, all strong teams at home.
Won 4 of their home games. Not underestimating Hertha but I think Hannover should be able to take 3 points from the newly promoted team.
Hannover (GER-1) +138*vs Hertha Berlin (GER-1)
Good luck.