Giraffe Manor, Nairobi
Looking at these pictures should be enough for you to already want to go here. Giraffe Manor is a home to endangered Rothschild giraffes and all profits made from the hotel go into charitable objectives of the African Fund for Endangered Wildlife. You can feed the giraffes from your breakfast table and go up to a treehouse and be eye level. You can't get that at a Hilton!
Giraffe Manor, Karen Hardy, Nairobi, Kenya
[Photos via @thesafaricollection, @fredtour]