Macdonalds' sales and marketing director Ruaridh Macdonald revealed that the Macdonald Inchyra Hotel & Spa, which is undergoing a £4m refurbishment including a £2.5m spa complex, will be re-opened in April.
"It's been an exceptional year for Macdonalds. We can't reveal our figures yet, but winter trading was particularly strong. These refurbishments are a sign of our commitment to improving the chain," he said.
The Macdonalds Bear Hotel in Oxfordshire is undergoing a £760,000 refurbishment of its bedrooms and six meeting rooms.
Meanwhile, the Macdonald Berystede Hotel & Spa in Ascot has this week begun refurbishing its meeting rooms, in a £250,000 project, expected to be completed in April.
The group last year invested £10m on the development of the 120-room Macdonald Windsor Hotel which opened its doors for the first time last September.