Private Castle for Corporate Retreats & Offsites

WELCOME TO

Your Next Company Offsite

Our secluded estate offers not only reliable Wi-Fi and plentiful parking but also complete privacy, making it your ideal home base for confidential business discussions. With a variety of rooms suitable for both collaborative workshops and one-on-one meetings, and an unrivaled ambiance that inspires creativity and strategic thinking, The Palace at Osowa Sien is the perfect retreat for teams looking to innovate and achieve.

Venue Highlights

Accommodation

The palace accommodates up to 46 guests in 40 individual beds across suites and rooms, each thoughtfully designed for business travelers. With comfortable seating areas, reliable Wi-Fi, and a peaceful environment, you’ll be ready for productive in-person or digital meetings.

Exclusive Use

Enjoy complete privacy as the palace and grounds become exclusively yours, ideal for open, uninhibited business discussions.

Venue Spaces

Our versatile spaces cater to a variety of needs, from intimate brainstorming nooks with armchairs to larger rooms for full-team gatherings and discussions.

Audiovisual Equipment

Count on reliable WiFi and leverage our professional Bluetooth-enabled AV equipment for your meetings, ensuring everything runs smoothly.

Services & Experiences

Cooking & Catering

Craft foodie experiences tailored to your group. Enjoy self-catered team-building dinners with our Stock-the-Pantry service featuring local, seasonal ingredients, or bring in your own chef.

Add excitement with local mobile food vendors like sushi bars or pizza trucks preparing made-to-order dishes onsite. Alternatively, head to the charming old market town of Leszno (19 km / 12 miles) to explore its restaurants and cafes.

For something truly special, savor our farm-to-table cooking and signature hospitality—or combine these options for an unforgettable culinary experience.

Team Building Activities:

Choose from a variety of local activities to enhance your retreat, from forest hikes and lakeside trips to hot air ballooning—perfect for boosting morale and fostering team spirit.

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Wellness

Relax in the Finnish sauna, meditate, or rejuvenate with massages and yoga classes, all designed to ensure peak relaxation throughout your company retreat.

Transportation

Getting here is a breeze. Fly into nearby airports POZ or WRO, or take a charter from Berlin directly to our doorstep. Coordinate guest arrivals and departures with local charter bus and taxi services, ensuring seamless travel for everyone.

Hear From Our Business Groups:

“Choosing this wonderful location for our Annual Review was perfect. The privacy and quality of service made our event successful and the setting was warm and cosy, especially in winter. Highly recommended for business or pleasure."

— Dingle Distillery

See hundreds of other 5-star reviews on google, here.

Our Offer

Pricing

Plan your next business retreat at The Palace at Osowa Sien with a minimum two-night stay in a setting that blends storybook charm with modern functionality.

Midweek (2 nights) – Starting from €5,150 + VAT (8%) in low season (e.g., November, March)
Weekend (2 nights) – Starting from €7,995 + VAT (8%) in season (e.g., spring, summer, early fall)
Peak-season & holiday rates – Pricing varies; request a tailored quote for your preferred dates.
Extended stays – Special rates for additional nights, making a weeklong retreat even more enticing.

What’s Included:

Exclusive use of the castle and its grounds (self-catered)
Accommodation for up to 46 guests across 40 beds
Essentials provided: Water, heating, linens, towels, Wi-Fi, and parking
Arrival: 15:00 | Departure: 11:30

Optional Enhancements:
Elevate your retreat with optional services like food, yoga, massages, or team-building activities.

The Palace at Osowa Sien isn’t just a venue—it’s your own private HQ for deeper connections, fresh ideas, and a well-deserved break from the city.

Business