If you go lower on this forum, you'll see an area titled "Camping at WDW". That's the best place to ask this type of question.
But in answer to your question?
Are the bathrooms nice/showers? They are nice and clean. There are several shower stalls on one side, and sinks/toilets on the other. The sinks only have cold water, but the showers have hot and cold. Showers are set up like many locker rooms, with an area to shower, separated by a curtain from the small dressing area.
How many pools are on site? I think there are two. My kids didn't use them. They are just pools though, without particular themes to them.
Is it easy to get from the parks there? MK is a boat ride away. You stop at Wilderness Lodge coming or going though. The others are a bus (unless you boat to MK and take the monorail to EPCOT). However, there is an internal bus system at FW. You typically take an internal bus to the transportation stations (one at the road entrance, one near the water entrance), and switch to a park bus. You typically share the park buses with Wilderness Lodge.