Fogel spoke to the topic during the company's first-quarter earnings call on Tuesday. Fogel said Priceline's Booking.com platform has more than 640,000 instantly bookable vacation rentals, which represents year-over-year growth of 51%. Booking.com's total properties represent around 25.5 million rooms, with 8 million of those in alternative accommodations like homes, villas and apartments. Answering an analyst's question on how to drive further growth in the vacation rental segment, Fogel said that the company does not charge travelers fees to book vacation rentals, and that all of its vacation rentals are instantly bookable. Get the full story at Travel Weekly