ListedBagni di Petriolo, ItalyHotel

Mercure Petriolo Siena Terme Spa Hotel

Guests arrive at a thermal spa hotel where natural hot springs meet Tuscan countryside, offering a rare venue where healing waters and celebration coexist.

Mercure Petriolo Siena Terme Spa Hotel is a hotel destination wedding venue in Bagni di Petriolo, Italy, hosting 20 to 150 guests in the $$$ price range, reached from Florence Peretola Airport (FLR), 90 minutes. Best months: June, July, August, November.

Guests
Up to 150 guests
Aisle estimate
Cost
€8,000–25,000+ total
Aisle estimate
Season
Best weather Jun–Aug
Aisle estimate
Getting there
PSA · about 1 h 30 by car
Aisle estimate

About Mercure Petriolo Siena Terme Spa Hotel

Guests arrive at a thermal spa hotel where natural hot springs meet Tuscan countryside, offering a rare venue where healing waters and celebration coexist.

The 4.3-star Mercure property sits in the Crete Senesi landscape near Siena, allowing your group to experience thermal pools, fine dining, and spa treatments alongside wedding events.

This setting transforms a destination wedding into a multi-day wellness retreat that guests actually look forward to attending.

Ask about a date.

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October 2026
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Nothing is reserved until the venue confirms. A first note comes back within two business days.

“

Nice hotel/spa. Service super, rooms super nice, SPA needs some maintenance, but nice feature… stayed there 3 nights and in between traveled around… in the PM time chillout in the spa 😃

Matjaž Gorkič · on Google →

Capacity, rooms and facilities

Staying over

Room types
7 listed

Getting there

Nearest airport
PSA, 90 min by carAisle estimate

The spaces

Event spaces
Banquet room

Venue highlights

  • Natural thermal springs with temperatures reaching 43°C (109°F) on the property
  • Located in Bagni di Petriolo, a historic thermal spa destination dating back to medieval times
  • 4.3 Google rating across 1000+ guest reviews
  • Spa facilities including indoor and outdoor thermal pools included with accommodation

The wedding season

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PeakGoodShoulderOff season

A sample wedding weekend

See the day-by-day outline+

Use this as a starting point and adapt it to your bookings and guests.

Friday evening · day 01
  • 4:00 PM onwardsGuest arrival; welcome reception by thermal pools or in hotel lounge
Saturday morning · day 02
  • 10:00 AMRehearsal (if needed) or guest spa time
Saturday afternoon · day 03
  • 3:00 PMHair and makeup; final preparations

Costs and booking details

Getting there
PSA · about 1 h 30 by carAisle estimate

Guests fly into PSA.

Typical total
€8,000–25,000+Aisle estimate
See the full figure+

€8,000–25,000+ for 50 guests (2-night stay, ceremony, reception, accommodations)

Ceremony fee
€500–1,500Aisle estimate
See the full figure+

Typically included with reception package or €500–1,500 (contact hotel for specifics)

Reception
€60–120 a headAisle estimate
See the full figure+

€60–120 per person (3-course menu, beverages, service)

Room rate
€120–250 a nightAisle estimate
See the full figure+

€120–250 per room (standard to deluxe, spa package rates available)

Weather window
June – August

The months the weather is kindest, with November mild too. Weather does not indicate whether a date is available.

Direct line
0577 160 7378

Answered by the venue in local hours.

Costs vary by season, room category, menu selections, and guest count. Thermal spa credits may be included or discounted. Request a formal quote from the events department.

Questions about the venue

Can we use the thermal pools as part of our wedding events?+

Yes. Many couples incorporate welcome receptions by the thermal pools or arrange spa credits as guest gifts. The hotel can coordinate timing with spa operations.

What's the ceremony and reception capacity?+

The venue accommodates 20–150 guests depending on room configuration. Indoor and outdoor spaces are available; inquire directly about your guest count.

Are accommodations on-site?+

Yes. The Mercure has guest rooms available, allowing your wedding party and guests to stay at the venue. Multi-night packages are common for destination weddings.

How far is the nearest airport?+

Florence Airport (Peretola) is approximately 120km away, roughly 90 minutes by car. Siena is 30km away for ground transfers.

What dining options are available?+

The hotel operates an on-site restaurant serving regional Tuscan cuisine. Custom wedding menus and rehearsal dinners can be arranged through the events team.

Before you keep looking

Could this be your venue?

Ask about your plans, pricing and availability. You do not need a fixed date yet.

Still deciding? Elena is Aisle’s AI wedding planner. Give her a month and a guest count and she will forecast the budget, work out how your guests would travel, and put a first plan on paper. No account needed.

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Sources and booking notes

Confirm your dates, guest numbers, room arrangements and inclusions with the venue before booking. An enquiry does not reserve a date. Figures labelled Aisle estimate are modelled from regional rates and public sources; they are not venue quotes.

Sources for individual venue facts