neena, yes it is child friendly, there are good loos and changing AND feeding areas half way up main street that I remember, we have been twice, can't remember their exact ages, the first time I was breastfeeding and we had the pram, so baby and a 4 yr old, the second time probably 3 and 7 yrs.
Just dont rush the first day by feeling that there is lots to do, pace yourself. The littlies really enjoy Fantasyland, but there is so much to see, music, entertainment, etc.
We liked Newport as the rooms are larger than Santa Fe where we stayed before. Santa Fe has hardly any floor space, just two big beds, so baby needs to play on the bed really. Newport has normal sized rooms.
When you enter the park each day, you pick up the map and show times (always arrive earlier). On the second day (if you watch the parade on Day 1) go to the rides that usually have the biggest queues as they should be quieter.
There are lots of threads on Eurodisney, have a good search, as you might pick up some good tips, my memories are rather hazy!
PS: my sons enjoyed the stunt car show at the studios, very exciting.