The Belfry’s 21 conference and event suites and six boardrooms have been fully updated during the major refurbishment, which started in April 2013.
The largest conference space, The Woodlands Suite, can seat 400 theatre-style or 300 for a banquet.
The 319-room hotel, set in 500 acres of countryside, has a PGA-approved golf course, and a new restaurant and bar. Its spa facilities are scheduled to be extended later in the year.
Managing director of the Belfry, Lynn Hood, said: "It’s an incredibly exciting time for The Belfry. The building work started in April 2013 and has completely transformed the resort. It’s back on the map not only as a golf mecca, but as an outstanding destination for business and relaxation."