Thermen Maarssen
Thermal baths & spa towns
About
Thermen Maarssen is a sauna and wellness resort by the Maarsseveense Plassen lakes in Tienhoven near Maarssen, the Netherlands. According to the operator it offers warming saunas, healing baths, wellness food, massages and an experience programme.
The website lists many saunas and steam cabins, from 40 °C (lavender cabin) to 95 °C (fireplace sauna). New are a graduation tower sauna, an infrared cabin and a four-element steam cabin. Entry is by reservation only, with a fixed arrival and departure time.
- Many saunas and steam cabins, 40–95 °C
- Panorama infusion sauna overlooking the Maarsseveense Plassen lakes
- Open-fireplace sauna (95 °C) and a Banja sauna on the water
- New graduation tower sauna, infrared cabin and four-element steam cabin
- Free short infusions and mini-retreats for all sauna guests
- Restaurant and relaxation rooms
Opening hours
| Daily | 9:00–23:00 |
|---|---|
| Beauty centre | daily from 10:00 |
| 31 December | closes at 21:00 |
| 1 January | opens at 10:00 |
According to the operator. Entry is possible only with a reservation and a pre-selected arrival and departure time.
Prices
| Entry (9:00–23:00)per person | from € 50,- |
|---|---|
| Evening entry (from 16:00)per person | from € 40,- |
| Weekend surcharge (Fri–Sun) | € 4 |
| Towel service (rental) | from € 13,- |
| Bathrobe (rental) | from € 15,- |
| Bath slippers (purchase) | from € 15,- |
| Sauna package (robe, towels, slippers) | from € 40,- |
Prices are "from" prices and, according to the operator, per person. An autumn deal is currently listed: entry with a lunch or dinner dish for € 60,- instead of € 75,- per person.
Amenities according to OpenStreetMap
Only what the open data records. What is missing, we do not know.
- Saunayes
What is not listed here is unknown to us or the operator has not said.
Pros and cons
Pros
- A varied choice of saunas from 40 to 95 °C
- Lake views from the panorama and meditation saunas
- Open daily until 23:00
- Free infusions and mini-retreats included in entry
- Restaurant and relaxation rooms on site
Things to keep in mind
- Reservation is mandatory; no entry without one
- Entry from € 50 is on the higher side
- Mobile phones are allowed only at reception and photography is banned
- Children up to 11 are not admitted
Who it suits and how it works
Who it suits
- a full day of saunas
- a couple for an evening
- infusion (Aufguss) fans
- quiet and rest without children
Rules and good to know
- Swimwear is not allowed in the saunas and baths; Thermen Maarssen has no swimwear days
- Reservation is mandatory and the main booker must show valid ID at check-in
- Children 0–11 are not admitted; 12–18 only with parents or guardians
- Relaxation rooms, restaurants and the terrace are bathrobe-only
- Mobile phones only at reception; photos and filming are not allowed
- Silence is appreciated in the saunas; water bottles may not be taken into the sauna
- Own food and drinks are not allowed
Getting there
Address: Westbroekse Binnenweg 2a, 3612 AH Tienhoven (Maarssen)
According to the operator, plan public transport with the 9292 app
Contact
- Address
- Westbroekse Binnenweg 2a, 3612 AH Tienhoven (Maarssen)
Details from the operator's own site, as of 4 Nov 2026. Check them with the operator before you go: thermenmaarssen.nl
Data source: OpenStreetMap contributors (ODbL licence)
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