The two great things about being a biped, are that it freed up the forelimbs to become manipulators, and the greater height meant a broader horizon to watch out for predators. Yeah, I know - 2055, a few hundred thousand years late to the party - but its still something to keep in mind when you're looking for a place to set up camp for the night.
An open area seems nice - clear sight lines to whatever might come. But it works both ways - they can see you too. Reanimates are usually slow, but people with guns aren't.
The woods are another two edged sword. With adequate warning, a person can generally make better time through broken terrain than a reanimate. The catch is getting that adequate warning, and you have to be wary of advanced types that can climb as well. Personally, an open area stirkes me as a better place than an enclosed one that might be full of silent stalkers.
Cities and towns are a special case. You can be out of sight, and fortified. Just be wary of being too fortified - they have a lot more patience than you do, and an exit will be necessary eventually.
A set-up at the base of a hill, or cliff can give you a good compromise - you can't be seen from one side, have clear sight to the other,. Get up a solid roof, or some traps so they can't come over the top (Or just pick a big enough cliff - a reanimate falling a hundred feet goes splat, just like everyone else!) - and you're pretty well good to go.
Water sources are nice, but remember that reanimates can swim, or at least make a journeyman's attempt. Last thing you need is the river at your back, defenses to the front, and soggy cannibals in your midst.