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A few hours at Spa Nescens can give an Interlaken day a completely different pace. The Victoria-Jungfrau offers specific Spa Days for people who are not staying overnight. Choose the actual package you want, with time for the facilities it includes and a quiet spell between them.
Send the enquiry before arranging the day around it. A request form is not a reservation, and a treatment appointment does not automatically unlock every pool, sauna or relaxation area. Confirm availability, included facilities and age rules with the spa team. General hotel opening hours are not a substitute for your confirmed day-guest session.