I stay there quite often.
The best thing about this hotel is its location with a direct entry to the main S-Bahn routes. Direct line to the airport. Close to downtown (five minutes via S-Bahn or 15 Minutes walk).
The rooms are ok. As a Hilton Gold you usually get a junior suite. Gives you a bit more room.
The hotel is next to the Gasteig. A lot of very good (classical) concerts in there.
Plenty of good restaurants and pubs around.