Okay, I'll be the voice of dissention.

As I mentioned earlier, we've stayed at all 3 resorts & my entire family agrees that RPR is our least favorite. Our DS(14) is a Hard Rock Hotel fan, which is where we usually end up staying.

My DH & I think Portofino Bay is by far the nicest of the 3. When our DS is no longer travelling with us, we'll always stay at PBH. We've taken nieces & nephews on different stays & all of them prefer HRH also. I didn't see any mention of kids. If you have younger kids, RPR's pool area will be great for them. If they're preteen/ teens, HRH is the happen' place to be. If your middle name is "luxury" go with PBH.
As for transportation, from HRH you can walk to Universal Studios in 5 minutes. IOA is a 5 minute walk beyond that. Going to the right of CityWalk, in front of HRC & NBA City, is the fastest way to get from US to IOA. When we stay at HRH, we always walk everywhere. It's faster than the boat or bus. From RPR, IOA is a 10 to 15 min. walk, depending on how fast your family walks. Of course, US would be 5 min. further. This time, you'll be walking on the left of CW though.

There's a short cut to the walkway by going through the lobby. My health isn't great, so we find ourselves taking the boat more than walking from RPR. PBH is the farthest from the parks & CW. It's possible to walk, if you're used to a lot of walking. You would be walking past HRH. If you'd rather not walk, the boat is a nice ride. FYI, the boats load & unload in the center of CW. If you haven't figured it out already, CW connects the 2 parks. UO's layout is extremely convenient. You'll love it, especially staying onsite.
