Also, value rooms sleep fewer people. Studios aren't affected (all sleep 4), but I just wanted to point out the difference. 1BR values sleep 4, but 1BR other categories sleep 5. 2BR values sleep 8, 2BR others sleep 9.
If you have never stayed on the savannah before, it is absolutely worth the extra points. Those savannah rooms make it the most unique hotel I have ever been in. Amazing.