Here are top luxury resorts in Singapore that are known for holistic spa programmes and integrated wellness packages — each entry notes the spa name, the kind of holistic treatments or signature packages they offer, and a source to check current packages and rates.

1. Capella Singapore — Auriga Spa (Sentosa)

• Why it’s good: Auriga is a flagship, nature‑focused spa set in Sentosa’s rainforest; signature “Intuitive Wellness” and longer ritual retreats (body + facial + hydrothermal Purification Water Experience, vitality pools, customised oil blends) make it a strong choice for holistic, science-meets-tradition wellness. (straitstimes.com)

2. COMO Shambhala (at COMO Orchard / COMO Metropolitan)

• Why it’s good: COMO Shambhala is an urban wellness flagship offering multi‑discipline programmes (yoga, Pilates, functional training), diagnostic/gut‑health services, thermal/contrast therapy rooms, red‑light and oxygen therapy, plus one‑day and multi‑day wellness paths and bespoke retreat packages. Great if you want a structured, results‑oriented holistic stay. (comohotels.com)

3. Raffles Hotel Singapore — Raffles Spa (city) / Raffles Sentosa (if you prefer island)

• Why it’s good: Raffles Spa focuses on holistic rituals combining Asian wellness philosophies with signature treatments (gemstone massages, chakra and sound‑healing elements), plus hydrothermal facilities and curated wellness‑butler services and multi‑day “Retreat by Raffles” options. Excellent for heritage luxury with holistic touches. (ttgasia.com)

4. Oasia Resort Sentosa — Oasia Spa

• Why it’s good: Positioned as an award‑winning, holistic Asian‑inspired wellness retreat on Sentosa, Oasia Spa blends Thai/shiatsu/Indian techniques, guided breathwork/meditation lounge, forest‑bathing elements and packaged spa + stay “Oasia Escape” offers. Good for sensory, restorative spa escapes. (oasiahotels.com)

5. Sofitel Singapore Sentosa Resort & Spa (and the island resorts cluster)

• Why it’s good: Sofitel’s Sentosa resort offers a holistic wellness programme (wellness retreats, movement classes, spa rituals tailored to island‑resort guests) and has access to beach/island wellbeing activities — suitable if you want resort facilities plus spa programmes and movement classes. (Check the resort’s Wellness/Sofitel Wellness pages for current retreat offers.) (Sofitel-singapore-sentosa.com)

6. Mandarin Oriental, Singapore — The Spa at Mandarin Oriental (Marina Bay)

• Why it’s good: Mandarin Oriental’s spa runs structured “retreat” programmes (e.g., Inner Strength / Outer Strength concepts), signature Asian‑inspired rituals (garden/heritage treatments), and multi‑day spa/fitness options — ideal for guests seeking tailored mind–body retreats in a Marina Bay setting. (mandarinoriental.com)

Quick booking & planning tips

• Packages and availability change frequently. For exact inclusions, durations and prices (many hotels publish seasonal offers or multi‑day wellness paths), check each property’s spa/offers page or contact their wellness concierge directly. The links cited above are the best place to confirm current holistic packages and book. (straitstimes.com)
• Popular elements to look for if you want a truly holistic package: multi‑day or day‑retreat itineraries (treatments + movement classes + nutrition/wellness consult), access to hydrothermal/contrast therapy rooms, personalised consultations (e.g., health/nutrition or body composition), guided meditation/breathwork, and complementary facilities (vitality pools, thermal suites).
• Pricing: single treatments at these luxury spas typically run from hundreds to several hundred Singapore dollars; full multi‑hour rituals and multi‑day packages can run substantially higher — always confirm taxes/service charges and whether spa credits are included in stay packages. (mandarinoriental.com)

If you want, I can:

• Check availability and current package prices for any one (or more) of these properties for specific dates, or
• Narrow the list by area (Marina Bay / Orchard / Sentosa) or by type of holistic focus (meditation & breathwork, fitness‑led retreats, traditional Asian rituals, medical/detox programmes).