A top hospitality leader in Asia gave a piece of advice for anyone interviewing for a job: Ask a lot more questions than you think you should. Michael Janssen, the general manager of Hilton Singapore , leads a team of about 500 staff at the five-star hotel, 1,080-room property in the middle of Singapore's upscale Orchard shopping district . He stepped into the role in September, following decades of leadership in hospitality at IHG Hotels and Resorts in Asia and Europe. Janssen told Business