Millennials (18-34) use extended stay accommodations more than any other group, with 72 percent staying at one for international business travel in the past year. Only 48 percent of generation Xers (35-54) and an even smaller 26 percent of baby boomers (55+) used an extended stay accommodation during the same time period.In addition, 60 percent of business travelers who use extended stay accommodations book it themselves with many of that group booking through an online travel site (41 percent) or directly on the extended stay website (38 percent).