I've never stayed at Windsor Palms, so I can't really answer your question completely, but just wanted to add that HIFS is really geared towards kids...there is lots of action going on all the time to keep them busy. THe pool area with jacuzzi, shuffle board and miniature golf and snack shack are great fun for the kids. At night we took advantage of the entertainment on a few occaisions and we all had fun.
Also, when we first stayed there we didn't take advantage of the free breakfast for a few days, because we wanted to get to the parks first thing and figured we could grab something at the parks. But then one morning we tried the buffet and now that is one reason we are returning. My family filled up on the free buffet early and then we went to the parks full so we could hit lots of rides early on. It's really a great deal. Also, kids eat free the whole time, so on a few occaisions we came back and ate at the hotel for dinner too.
I only mention this because if price is your major deciding factor, you might want to factor in the price of food.
Having two bathrooms at Windsor Palms would be a plus though! Everything has it's pros and cons!