Here is a direct link to the resort map.
https://www.my-vacationclub.com/resort/PdfLinkServlet?file=\resort\ho\099+no-display\ho_resort_map.pdf
Only buildings 28, 29, 30 and 31 have lock off 2BR units. It is those lock off units that make the 1BR and studio units. So if you have a 1BR unit reserved, you will be guaranteed to be in one of those four buildings. The lock off units are also located on the ends of the buildings. For example, in buildings 28/29 (which is really just one building with an elevator bank in the elbow of the L), there are four on each floor. Two on the outer ends and two in the "corner" of the L.
When making a villa request, it is best to call the property and have them note your reservation. The property may send out a pre-arrival email, but they are pretty generic with not many options to select for villa placement requests.
We own at Harbour Lake, but have only been there a couple of times. Our Fall 2015 news letter indicated that buildings 28 and 29 would be refurbished in 2016. Our Spring 2015 newsletter indicated that buildings 10, 12, and 13 would receive refurbishment starting in September 2015. So I would expect that work is now complete.