The phrase "old stables" refers to the buildings or structures where horses used to be kept in the past. It implies that the stables are no longer in use and have been around for a long time. Full definition
«B» Class properties consist of properties in older stable areas, are in a slightly less desirable neighborhood, are built in the last 15 - 30 years, still nice, with some amenities. (biggerpockets.com)
Feathers overlook the beautiful old stables of the farm, past the farm outer buildings. (travelground.com)
The delightful old stable block has been converted into comfortable accommodation, decorated in French Provencal style... [cont.] (sa-venues.com)