Opening Hours

Mon-Thurs 9am - 7pm \ Fri-Sun 8am - 7pm

Couple in Spa Relaxation Room

how to spa

Potosa Spa is located on the lower level of Hotel Julien Dubuque and includes a full-service salon along with five spa treatment rooms, one of which is a Spa Together room with side-by-side massage tables.

To learn about accessibility features for guests with mobility and sensory impairments, read more HERE

When You Get There

When you enter Potosa Spa, you’ll see a beautiful water wall feature accented with mosaic tiles in a soothing color palette of cream, chocolate, organic green and turquoise blue. Check in at the reception desk just inside the door.

Next, you’ll be shown to the lounge area where you will be offered a robe and sandals to enjoy during your visit with us. The lockers have key-code locks; however, we recommend that you leave valuables at home or in the safe in your room.

You will then be directed to our Relaxation Lounge where you may relax in front of our fireplace in wave-style lounge chairs until your therapist greets you for your treatment.

What to Wear

Upon entering the treatment room, you will discuss with your therapist your expectations for the service. Your therapist will invite you to get comfortable to your desired level. That could be to wear a bathing suit, undergarments, or disrobe completely, but that is left entirely to your discretion.

Therapist Gender Preference

We do employ both male and female therapists, and you will be scheduled with either unless you let us know at time of reservation that you have a preference.

Cell Phones

For the peace and tranquility of all our guests; we ask that all electronic devices be silenced during your visit.


Gratuities for treatments at Potosa Spa are meant to commend therapists for exceptional service and are at the guest’s choice. All gratuities should be left with front desk staff upon departure. The standard within the spa industry is 15-18% of your treatment cost. However, please leave whatever you desire for your therapist.


Contact us at 563.588.5570 and one of our spa staff will be delighted to assist you with your appointment. Or, simply schedule your appointment by visiting our Online Booking Page.*

*Mobile online reservations via the Online Booking Page for Potosa Spa are not possible at the moment. Please use a non-mobile electronic device or call directly to reserve at 563-588-5570. Thank you for your patience!

For best availability, we recommend treatments be scheduled at least two weeks in advance. To secure your reservation, we will ask for a credit card to hold the appointment for you. No charges will be made to your card until the day of your visit. Should you wish at that time to use a different form of payment, please feel free to do so.

Purchasing Spa Products

Elite product lines featured in our retail area include Pevonia Botanica, Deserving Thyme and Spa Ritual.

Pool and Fitness Studio

Spa guests may also enjoy the sunlit pool and fitness studio adjacent to the spa.

Overnight and Day Guests

Potosa Spa is available to overnight guests of the hotel as well as day guests.

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