The Mardi Gras-themed evening included entertainment, such as tarot card readers, a 'Test Your Strength' machine, stilt walkers and jugglers. Cocktails were served on the Square, one of the hotel's public areas.
The event is usually held at the Skyline property but took place at the group's Park Lane venue last year as the Skyline was under refurbishment.
"Now we've had our £5m revamp, it is great to be able to welcome agents back to show them what we've achieved, said Sheraton Heathrow director of sales Katherine Gordon.
The party abandoned the traditional sit-down dinner in favour of informal food stations more in keeping with the theme, serving typical fairground fare such as burgers, Tex-Mex dishes and candyfloss. "It gave guests a good chance to mingle, said Gordon. The informality also extended to the content of the evening, as she explained. "We didn't bother with an official presentation but instead we sent out CDs with pictures of the party that featured messages from our UK and Ireland properties."
Along with the fun element, guests were able to network with industry colleagues. Senior International Incentives, Conferences and Events project manager Rachel Boldison said: "The hospitality was superb and it was a great chance to meet a lot of the Starwood staff under one roof."