Jambo 1BR were converted to DVC rooms years ago, so they are a little smaller. Kidani rooms were built specifically for DVC, so they aren't as tight on space. Kidani gets 2 bathrooms and a little more square footage. Jambo is smaller with 1 bathroom. We have stayed in both Jambo and Kidani 1BR and Kidani 2BR. To me, the need for the extra space increases if you have extra adults. When it was just our family of 4 we were fine, but when we added grandparents the 1BR at Jambo was tight.