Spa day: Enjoy a relaxing spa day for at 3D Health & Fitness in Corby. Location: Conveniently based inside the Holiday Inn in Corby, just off of the A43. Deal Bonus: 25% off any additional treatments pre-booked before arrival. £10 surcharge for Sat or Sun bookings Robe hire: Feel cosy with a fluffy robe hire each for your relaxing day. Valid: Mon-Sun 10am-5pm. Treatments: Treat yourself to an indulgent 25-minute back massage or mini facial and let your everyday stresses melt away... Facilities: Take advantage of three-hours of access to the leisure facilities including a pool, Jacuzzi, sauna and steam room.