I stay in Munich frequently. Ca 70% at Hilton family, 30% at IHG.
Been to and would recommend (order):
* Holiday Inn Munich Westpark
* Holiday Inn Munich City Centre
* Holiday Inn Munich Leuchtenbergring
* Holiday Inn Express Munich City West
Depending mostly on location for planned/necessary activities.
For me, the newly added niu properties have one very big and hidden disadvantage: The do neither have Queen nor King beds. Just 2 small beds with 2 separate mattresses (no topper!) next to each other.