Tonic Health & Day Spa at Castleknock


*Please note that due to an exciting expansion development at the hotel in 2017, Tonic Leisure Centre, including gym and pool will be closed January 1st 2017 until December 2017. All other ground floor areas remain unaffected by the expansion.

Tonic Day Spa including the relaxation room will remain open from 5-9pm midweek and from 10-6pm weekends for treatments and a temporary gym will be open upstairs during this time for hotel residents. To avoid disappointment we would advise that guests book treatments in advance*


   Book Today  

+353 (0) 1 640 6333

Make an Enquiry


 Tonic Day Spa is open to the general public


castleknock tonic specials july august 2017

for information or to book a treatment


     NEW TONIC Day Spa Opening Hours January 2017
Monday & Tuesday            5pm to 9pm
Wednesday - Friday           5pm to 9pm
 Saturday                  10am to 6pm
  Sunday                    10am to 6pm 

Tonic Health & Day Spa at Castleknock Hotel, is an luxury hotel spa in Dublin offering guests an extensive range of refreshing and soothing therapies in private luxurious treatment rooms with single or twin rooms available for you to relax alone or with your friend, family member or partner.

The fully qualified therapists at Tonic specialise in massage, facials, aromatherapy, reflexology, waxing, manicures and pedicures including Shellac which are sure to refresh mind, body and spirit. St Tropez spray tanning is also available for that year long healthy, natural looking tan.

Before and after your treatments, enjoy some peace and tranquillity in our Relaxation Room. With robes and slippers provided, you can laze around with a magazine or simply let the world pass you by accompanied by some soothing music and soft candlelight, the perfect tonic. Tonic Health & Day Spa is located at Castleknock Hotel and is the leading day spa in Castleknock and West Dublin.

We strongly recommend that all treatments and appointments are pre-booked in advance to avoid disappointment. To make an enquiry, please click here.



© 2015 Castleknock Hotel, Porterstown Road, Castleknock, Dublin 15
T: +353 (0)1 640 6300 | E:
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