Spa hotel in Bath

Spa 15

Hidden beneath the pavements of the grandest street in Bath, is a spa with a personality all of its own

Rest and restore

A hidden haven for relaxation

Taking the waters and relaxation has long been an integral part of life in the world heritage city of Bath, which is why Spa 15 is focused on indulging all of your senses. Warm and cosy vintage-inspired decor inspires a home-from-home feel; bespoke art installations dictate the individual themes in our four treatment rooms, while you’ll also find a large cedar wood hot tub within historic, exposed stone vaults, a lovely barrel-shaped sauna and a separate steam area. Holistic and results-driven treatments from ila and Natura Bissé are delivered by highly-skilled therapists and are dedicated to restoring mind and body, while there’s also a relaxing retreat with sink-into armchairs and gently flickering open fire, where you can truly escape, rediscover your balance and sip on loose-leaf herbal teas or fizz if you prefer.

Spa 15 Treatments

Indulge the senses

From results-driven facials to deeply-relaxing massage and pampering body treatments, we've got the perfect therapy for you.

Spa days

Time to relax

Make the most of Bath’s historic spa culture and treat yourself, or a loved one, to a special Spa 15 experience.

Spa facilities

Find your balance

Discover wet and dry areas, unique chill-out spaces and plenty of personality.

Spa breaks

Great escapes

Escape to Bath for a luxury city break combining relaxation with culture, curiosities and plenty to delight all of your senses.

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Book direct

We guarantee the best rates around


If you book direct through our website, not only can we guarantee you the best rates around, we can also offer a late check out and 10% off dining. What are you waiting for?

The ultimate hosts

Corporate events

All of our event spaces exude an all-pervading feeling of wit and personality.

Memorable events

Celebrations

The extraordinary world of No.15 makes for an intriguing setting for any occasion.

Luxury for the curious

Discover No.15

Our quintessentially English boutique townhouse hotel is full of surprises and curiosities.