Tonic Health Club
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The new spa at Castleknock Hotel is scheduled to open in December 2017 as a brand new purpose built spa
Tonic Health Club at Castleknock Hotel will reopen on 18th December 2017 as our new fitness and leisure centre with refurbished changing rooms and new aerobics studio on the ground floor. The Spa at Castleknock Hotel is also adjacent to the health club.
22/07/2026
Long summer days are made for al fresco dining ☀️
Pull up a seat on the terrace and, as a Tonic Health Club member, enjoy 10% off all food and beverages every time you visit.
In this reel, Sue shares why the PRO-COLLAGEN SKIN PROTECTION FLUID SPF 50 is the perfect addition to your summer skincare routine ✨
Lightweight, hydrating and offering SPF 50 protection, it helps keep your skin protected while leaving it feeling smooth and radiant throughout the sunnier months.
Discover this ELEMIS favourite at our spa and find your perfect summer skincare essential 💛
17/07/2026
Ready to prioritise your health, wellness and wellbeing? ✨ Discover a healthier, more balanced lifestyle with membership at Tonic Health Club, where you can enjoy our fitness facilities, relaxing spaces and a welcoming community designed around your wellbeing 💪
As a Tonic Health Club member, you’ll also enjoy 10% off Spa treatments and Dining at Castleknock Hotel - the perfect excuse to relax, recharge and treat yourself 🧖♀️🍽️
Start your wellness journey with us today by emailing [email protected] 💚
This is exactly what we mean! 🤩
The heatwave has officially overstayed its welcome ☀️
Luckily, we know the perfect place to disappear for a while… our Dry Floatation Bed ✨
Learn more through the link https://castleknockhotel.onejourney.travel/spa/treatments/67302 🤗
Too hot to handle? We’ve got the perfect remedy! 😎🌊
Get summer-ready with our limited-time 3-month membership ☀️💪
Build strength, boost fitness, and feel your best this season.
✨ €325 + €25 joining fee
⌛ Offer available for a limited time only
Join today:
📧 [email protected]
📍 Visit reception to sign up
Long summer days are made for al fresco dining. ☀️
Pull up a seat on the terrace and, as a Tonic Health Club member, enjoy 10% off all food and beverages every time you visit.
Two new reasons to treat yourself this summer 💚
Suzanne and Fauziya are talking you through our July & August Spa Specials, from the refreshing Summer Breeze Package (€115 per person) to the deeply relaxing FRÉAMH Hot Stone Ritual (€95 per person) 🤩
Which one are you choosing? ✨ Book your summer spa escape by calling our Spa team on +353 (0)1 640 6366 or emailing [email protected]
29/06/2026
Did you know? We have children’s swim toys available at the Tonic reception desk 🤿
Click here to claim your Sponsored Listing.
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Address
Porterstown Road
Dublin
DUBLIN15
Opening Hours
| Monday | 6am - 10pm |
| Tuesday | 6am - 10pm |
| Wednesday | 6am - 10pm |
| Thursday | 6am - 10pm |
| Friday | 6am - 10pm |
| Saturday | 8am - 8pm |
| Sunday | 8am - 8pm |