Many ask for a room near the lobby which are very hard to get with 90% of the guests asking for those rooms. We usually only ask for a low floor. Often in the higher floors the animals are hidden by the trees where they like to sit because of the hot sun. Some guests requests rooms near the bus stop. The giraffes and zebras are only seen on the Sunset Savanna so if that matters to your guests then you might want to request that savanna.
BTW, you do not have to walk to Jambo House as there is a shuttle that runs between the two buildings that you pick up in the valet area. And the park buses start at Kidani Village and then stop at Jambo House before going on to the parks. The DTD buses stop at Jambo House first and then go to Kidani Village.