i can't tell you much about staying onsite in a value. but i have stayed at the hilton in dtd with a five year old. ill give you my pros and cons of this hotel.
PRO:
1. the only non disney hotel that has early magic hours like the disney on site properties.
2. was the first or second stop on the bus route back from the parks.
3. was an easy walk/stroll from the pool down to a very well lighted path to dtd when you want to do something but don't want to go travel to the parks or want to just spend some time shopping or going for some easy food. (mc donalds, earl of sandwich, the ice cream place that i would butcher if i tried to spell it. hehe)
4. you can have your packages sent back to the hotel from the parks and dtd.
5. being close to dtd, you can catch the buses to the other resorts without trouble.
6. the buses weren't terribly crowded unless it was a bus that picked up at the water parks and it was close to closing time at those particular parks.
7. as for being out in the parking lot for pick up, i will admit it was kinda annoying. but they tend to have a number system (meaning that your bus will be in section 27 to pick you up and they had the numbers painted on the ground), and even then there are sometimes two buses that will take you where you need to go. so in reality it wasn't THAT bad. even the walk from the parking lot to the park wasn't bad (and this is coming from someone who carried my five year old nephew while he was sleeping to take the bus back). the only time i hated it was with animal kingdom. the bus was not on time at the closing time for animal kingdom. it was HOT out (end of august) and we weren't sure where we were being picked up because they had just black topped the parking lot so we were out in osh kosh. the only good thing about that day is that we got to talk with people in our hotel and made some friends.
8. the hilton does have a character breakfast on particular days.
9. the sink was outside of the shower and toliet area in the room.
CONS:
1. that incident at animal kingdom with the bus.
2. they never gave us our mousesavers coupon for a free meal for my nephew.
3. there were three different pools for various levels (shallow wade pool, kid pool, deep pool starting at 3 feet going to 8 ft) but the little ones didn't want to go to the kiddie pool. -- but that is just my little gripe.
i would stay there again with or without my nephew. i was there because i got a good price for the times i was there. and i liked the convience to dtd. right now i am looking at staying on property because i want to experience akl or wl or poly.