This is an entry in our Disneyland 101 Glossary: Disneyland Resort definitions in under 101 words, from Mouse Brief.
At Disneyland Resort, “villas” are the designation given to the guest accommodations for Disney Vacation Club (DVC). At Disneyland Resort, Disneyland Hotel and Disney’s Grand Californian Hotel & Spa have villas in addition to traditional guest rooms and suites. These villas come in studio, one, two and three bedroom configurations. It is sometimes possible to book these villas without owning a DVC membership by going through Disney’s traditional booking process (subject to availability). It is also possible to rent DVC points from owners through third party brokers or directly from the owners themselves in order to book these villas.