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Firefly Room

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Hall Rental at the Muellner Building

The Firefly Room, located in the Muellner Building, features windows for viewing the Tosa Room. Its intimate size makes it ideal for small parties and business meetings.

Firefly Room 1

Size and Capacity

Dimensions: 20’ x 40’
Seating Capacity: 48


  • Carpeted
  • 60" diameter round tables (6)
  • 8' x 30" banquet tables (2)
  • Card table (1)


  • 4-hour minimum rental: $180
  • Each additional hour: $45
  • Maximum daily rental: $315
  • Damage deposit: $100
  • Down-payment is 50% of full rental price, plus damage deposit, and is due with application 
  • Remaining balance of rental cost due 30 days before rental date


Rental halls in the Muellner Building at Hart Park are available for private or public functions on:

  • Monday - Thursday evenings, 4:00 pm - 10:00 pm
  • Friday evenings, 3:00 pm - 11:00 pm
  • Saturday, 10:00 am - 11:00 pm
  • Sunday, 10:00 am - 10:00 pm

To rent a hall, email or call the Parks Department at (414) 471-8420 on weekdays, 7:30 am - 4:00 pm. You can check Hall availability on this calendar. The Parks office is located at the Department of Public Works Facility at 11100 W. Walnut Road which can be accessed by traveling east on Walnut Road off of 116th Street.