Groups

Business

Collaborate & Connect
WELCOME TO

Your Next Company Offsite

When your team needs a change of scenery to think, connect, and create—this is the place.

Here in The Palace at Osowa Sien, you get full run of a historic castle in the Polish countryside. No shared spaces. No outside guests. Just your team, the time, and the freedom to do things differently.

Venue Highlights

Accommodation

The palace accommodates up to 46 guests (40 beds) across suites and rooms, each designed for comfort and focus. Reliable Wi-Fi, cozy seating areas, and peaceful surroundings make it easy to blend work and rest.

Exclusive Use

When you book the palace, it’s entirely yours—the castle, gardens, and grounds become your private retreat. Perfect for open discussions, deep work, and uninterrupted time together. 

Venue Spaces

Our spaces flex easily to fit your team’s needs—whether it’s a quick pow-wow, a roundtable discussion, or a full presentation. Even small groups often need a central spot to gather, plus breakout corners for smaller sessions or casual coffee socials, and we’ve designed the main floor layout with all this in mind.

And yes—there are plenty of tucked-away nooks, too. Perfect for quiet reading, solo reflection, or deep individual work between sessions.

Audiovisual Equipment

High-speed Wi-Fi and Bluetooth-enabled AV equipment ensure meetings and presentations run smoothly.

Why Here, Why Now?

The most valuable ideas often happen off the clock—over coffee by the fire, a walk through the gardens, or dinner that turns into laughter. Our setting helps those moments happen naturally.

Teams come here to recharge, reconnect, and rethink strategy away from everyday noise. Whether you’re planning your annual offsite, creative sprint, or wellness retreat, this is your space to focus and grow together.

 

Services & Experiences

Foodie Business

At this castle, every meal is an experience.
From fireside dinners and lively ballroom feasts to relaxed brunches or deli-inspired lunches after long workshops—our farm-to-table* cooking is seasonal, local, and designed to bring people together.

Farm-to-table isn’t just a buzzword here — we grow our own fruit and vegetables, work with local farms, and even keep hens on natural feed for fresh eggs.

Meals can be entirely self-catered (many lifestyle retreats bring their own team or preferred vendors) or hosted by us, with full service and our signature hospitality—designed not just to nourish but to reflect your group’s unique dietary needs.

Team Building Activities:

Step outside the castle and explore the countryside.
From forest walks and lakeside picnics to wine tastings in the palace park—or hot-air ballooning over nearby Leszno—there’s plenty to inspire your team, spark ideas, and strengthen connections.

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Wellness

Relax and recharge.
Unwind in the Finnish sauna, stretch in the yoga studio, or organize a group vinyasa session. Don’t miss our signature treatments and massages inspired by local herbs, honey, and wine. These wellness options help restore balance, clear the mind, and keep your group at its best—mentally and physically.

Transportation

Easy-peasy.
Located between Poznań (POZ) and Wrocław (WRO), the palace is easy to reach—just over an hour from either airport, or about three hours from Berlin (BER).
Private transfers, local charters, or group taxis can be arranged directly to the castle for smooth, door-to-door travel.

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.

Host Your Team Retreat at The Palace at Osowa Sien

Exclusive-use castle stays designed for strategy, creativity, and connection.

Every stay includes:

  • Exclusive use of the castle and 5-hectare estate
  • Accommodation in spacious suites (40 beds)
  • Essentials: Wi-Fi, linens, towels, parking, and heating
  • Flexible catering, wellness, and activity options

Whether you’re coming for strategy, creativity, or rest, The Palace at Osowa Sien provides the space and atmosphere to make it happen.

It’s not just a venue.
It’s your team’s private HQ in a storybook castle—one they’ll be talking about long after they return.

Ready to start planning?

Drop us a message at hello@castlerental.com with a few details—your group size, preferred dates or season, and length of stay. We’ll send over an offer and help shape a retreat that fits your team’s goals, schedule, and style.