We (family of 4, two kids 7 and 10) stayed here for 3 nights whilst visiting the local attractions (Disneyland etc). I have stayed in Radisson hotels before, and found them much better than this one. A bit dissapointed really.
For us there were two big problems with this hotel: noise and malfunctioning internet. The noise from John Wayne airport is annoying and almost constant from about 0600hrs through to about midnight. The wireless internet is free, but it didn't work! I tried just about everything to get the internet to work (hotel's wireless kit, help-line etc). I use the internet for free international phone calls, but its unavailabilty meant that I had to make two calls using the hotel phone (a $120 bill)! The excellent duty manager is investigating the situation, and hopefully we may see some cash back...
Other comments: Restuarant OK (but poor choice of wine, food middling); staff helpfull and friendly; gym OK (but needs updating), pool and hot-tub OK; location good for the airport, but hopeless for peace and quiet; parking free.
So, the Radisson is OK-ish. We wouldn't stay there again, but I can't really say the hotel is awful.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.