In that zone we really like the Tropicana for location and price and the Cove market is great but the Tropicana is not the quietest. There's something about exterior corridors that just make things louder... We've stayed at the Hojo a few times too and generally like that that as well, though did find the freeway facing rooms in Building 1 to be a bit noisy. We often book the kids suites there which are only in that Building and I think may only been on the freeway side.
I had planned to stay at the new Home2Suites (have stayed at these elsewhere and like them-I'm also generally a "Hilton person") next week but DD16 convinced me to try the new Westin instead. That said, the location is very close to the freeway for the Home2... we have stayed at the HI Express next door to it and the freeway can be noisy depending on your room location. I'll admit I also didn't love the walk to the HI Express... it really wasn't that bad but somehow walking down past the Courtyard made it seem far.
The Courtyard is nice and rooms are spacious with a GREAT family layout (two shower areas!) but I just can't get behind the price as it often approaches on property hotels and we almost never use the pool area which is part of what you're paying for.
I guess you can tell we gravitate toward the northern half of Harbor from the crosswalk...Panera and Mimi's are certainly handy there. We used to enjoy Pizza Press at the Carousel (RIP) but haven't been since they moved farther south-I'm sure they're still good.
I've stayed at PVI and Grand Legacy on the south half as well. Both were serviceable but not amazing and were quite noisy-PVI largely because my room was next to a stairwell and housekeeping storage area. There's also Candy Cane. I wanted to like CC as I know others here rave about it but the room seemed very dark and cramped to me, though otherwise everything was fine. The grounds are very nice as was the breakfast. The whole facility is very well cared for. Maybe we just had bad luck- I also did not book one of their deluxe rooms so maybe lesson learned there. The walk is not far but I was with my youngest when she was little that trip and we did take advantage of the shuttle a few times which was nice. I know they are remodeling and still haven't reopened so things may be even better when they do.
Wow... this made me realize just how many different hotels I've stayed at on Harbor just between the freeway and Katella! I guess I can't really claim to have a "go-to".