We strongly recommend booking ahead to guarantee your session, especially for evenings and weekends — those slots book out fast.
Walk-ins are welcome when space is available, but we keep a limited number of guests per 90-minute session to maintain a calm, uncrowded space. Booking online via our Fresha page is the safest way to secure your time.
All bookings are made through our Fresha booking page — accessible from any "Reserve" button on this site. You'll pick your session type, date and time, and add any extras like a massage or extended sauna at checkout.
Once opening day is confirmed, sign up to the notify list for first-access booking before we open to the public.
Bookings are secured with credit or debit card details at the time of booking, but payment is only processed at check-in. We accept all major cards and EFTPOS.
We are a cashless facility, so cash payments are not accepted. If you're using a gift card or membership credits, those will be applied at check-in instead of your card being charged.
You can cancel or reschedule your session free of charge up to 12 hours before your start time. We send a reminder 24 hours before so you've got plenty of notice.
Cancellations within 12 hours, or no-shows, are charged at the full session price. No refunds are issued for late cancellations or missed sessions.
To change a booking, log into your Fresha account or use the link in your confirmation email.
Yes — group bookings of up to 6 people can be made through the Fresha booking page. You'll add each guest individually so we know who's coming. For larger groups or private events, please email info@sonderbathhouse.com.au.
Every Sonder Soak session is 90 minutes. That's the right amount of time to move through all three mineral pools, the cedar sauna and the steam room at your own pace, without rushing.
If you book a Soak + Massage, your total visit is 2 hours 30 minutes (90 minutes in the bathhouse plus a 60-minute massage).
Our three mineral pools are kept at:
- Hot Pool — 40°C · deeply warming, loosens tension
- Warm Pool — 28°C · long, cool magnesium soak for slow circulation
- Cold Plunge — 9°C · brief, bracing reset
The contrast between them is the medicine. Most guests move between them several times in a single session.
Our pools are mineralised with magnesium chloride rather than sanitised with chlorine. The water is gentler on skin, eyes and hair, with no strong chemical smell.
Magnesium is also absorbed transdermally — through the skin — and many guests notice softer skin, eased muscle tension and better sleep after a soak.
We've written more about this in our journal: Magnesium vs chlorine pools — what's actually different?
All pool, sauna and steam areas are communal and open to all genders. The space is designed to feel calm and quiet — we ask all guests to keep voices low and phones on silent.
Our massage room is private. Massages are booked as add-ons to a session or separately.
Yes. Weekends and weekday evenings (6pm–9pm) are our busiest — more of a social-soak energy, with friends and couples. Weekday mornings, afternoons, and overnight sessions are quiet and reflective.
If you prefer fewer people, aim for a midweek early-morning or late-night session — they're some of our most popular slots with regulars for that reason.
Yes — Sonder Bathhouse is open every hour of every day, including public holidays. There's always a staff member on site, and all facilities are monitored 24/7 with CCTV in common areas (never inside change rooms or the massage room).
Overnight sessions are some of our most loved — quieter, more meditative, and perfect for shift workers, parents, and night owls.
Absolutely. We have on-site staff at all times, secure entry (booked guests only, with code-based access), CCTV throughout common areas, and well-lit parking. Our 18+ adults-only policy keeps the space consistent at every hour.
Overnight is in many ways our safest, calmest period — fewer guests, more space, and the same level of supervision as during the day.
Off-peak Early Bird pricing applies during quieter periods, which includes most overnight slots. That means a 90-minute soak at 2am is one of the best-value sessions we offer.
Just yourself and swimwear. We include with every session:
- One towel
- Filtered still and sparkling water
- A selection of teas
- Body wash in the showers
If you'd like a robe, padlock for storage, or an extra towel, those are available to hire at reception. Many guests also bring non-slip slides or thongs.
Proper swimwear is required in all water facilities. Regular clothing (cotton t-shirts, gym shorts, etc.) can't be worn in place of swimwear. No nudity is permitted at any time.
We have storage cubicles in the change rooms. You're welcome to bring your own padlock, or hire one from us for a small fee. We recommend leaving expensive valuables (jewellery, watches) at home — Sonder isn't responsible for lost or stolen items.
We have individual change cubicles, all-gender toilets, and open showers with body wash throughout the bathhouse. Hairdryers are not provided.
We recommend a quick rinse before entering the pools. After your soak, the magnesium minerals are actually best left to absorb into your skin — most regulars skip the post-soak shower and rinse off at home.
We have one accessible combined shower, toilet and change room.
Sonder Bathhouse is strictly 18+ at all times, including for guests visiting with adults. Photo ID may be required at check-in.
We've made this policy decision so we can keep the space calm and consistent at every hour, day and night.
During pregnancy, the hot pool, sauna and steam room are not recommended because they raise core body temperature. The cold plunge is also not recommended because cold temperatures can cause uterine contractions.
The 28°C warm magnesium pool can be used for short periods (under 10 minutes at a time), subject to your doctor's advice. Pregnancy massage may also be available — please email us in advance to plan a safe visit.
Bathhouse facilities — particularly the hot pool, sauna and cold plunge — affect cardiovascular and thermoregulatory systems. If you have heart conditions, low or high blood pressure, are taking medication that affects body temperature regulation, or have any open wounds or skin conditions, please consult your doctor before visiting.
If you feel unwell at any point during your session, please find a staff member immediately.
We have an accessible combined shower, toilet and change room, and pool access ramps on the warm and hot pools. To make sure we can welcome you properly, please email or call us before your first visit so we can plan around your needs.
Health fund rebates are not available for Sonder Bathhouse sessions or our massage services. Sonder isn't able to issue receipts for health fund claims.
Sonder is built on shared calm. The basic rules:
- Rinse before entering the pools and between sauna/steam and pools
- Appropriate swimwear at all times — no nudity
- Keep voices low and phones on silent
- Move between facilities so everyone gets their turn
- Respect fellow guests and staff
- Photos of yourself only — never of others without their consent
- Only food and drink purchased at Sonder permitted (water excepted)
- No smoking, vaping or alcohol
Aggressive, rude, discriminatory or inappropriate behaviour will result in immediate removal without refund.
Selfies and photos of yourself are welcome — and please tag @sonder.bathhouse if you share them. Photos that include other guests, even in the background, are strictly not permitted unless you have their explicit consent.
Yes — memberships, multi-session value packs (5-pack and 10-pack) and gift cards will all be available from launch. Pricing is being finalised closer to opening day.
Sign up to the notify list and we'll send launch-week pricing and early-bird member pricing as soon as it's live.
We're at 15 Marion Street, Bankstown NSW 2200, an easy walk from Bankstown Station and bus interchange. Limited parking is available nearby. We'll share full parking details closer to opening.
Yes. Our 60-minute relaxation massage can be booked on its own through the Fresha booking page, or added to any Sonder Soak session as a Soak + Massage combo.