Sometimes when the data is put into the MLS by the listing agent, they vary where they include certain fees. They can be lumped into another category such as "Space Rent" or "Other Fees" so other websites pulling the data don't know which category to use and what is exactly contained in those fees. This is what happened with the Westwinds listing you referenced. On 3 recent listings, the same fees were put in by the listing agents as either HOA fees, Space Rent, or Other Fees. Other MLSs may have different names for these categories too!