We stayed at the Hilton this past August. I am not sure how many Hiltons there are but it isn't on the boardwalk (like 3 or 4 blocks up).
From the Hilton the boardwalk is 5 blocks south. Really the boardwalk is not that bad to walk. It is only 2 1/2 miles one way. I walk it sometimes when I get done with work.
My sister drove to the boardwalk one night & took a walk to it in the am & one am they rented bikes but we didn't.
My kids were content wtih swimming in the pool & going to the beach. We did mini golf across the street from us & the go karts. Our car never left the spot we put it in.
We are planning a trip next summer but not at the Hilton (my sister had points & some free rewards nights so I got to use them).
To me that is the only way to stay at the Hilton here in OC...even this time of year the rooms are a few hundrad dollars a night. Summer they can be upward of 500.00 a night! And lets not even get into the pent house---that is like 10,000.00 for the week (based on 2 people, extra people is more and it will hold up to 18 people I think someone said!!)!!!
We are looking at the Holiday Inn (dh has points). It looks just like the Hilton, same pool but opposite. Most of the reviews on Trip Advisor are good. I am mainly going there because it is free to stay, they have a pool that my kids already love & there is a kitchen & it's on the beach.