Massage Therapy
Swedish, deep tissue, prenatal, and more. Choose from 30 to 90 minutes; your therapist tailors pressure and technique to what your body needs that day.
Welcome to Spa Flow Studio, Your Massage and Wellness Destination on K Street in Washington, DC
Massage, sauna, and skin care in downtown DC.
1108 K Street NW, 2nd Floor, two blocks from McPherson Square Metro. Open 10am to 8pm daily.
The Care You Know, Under a New Name
Spa Flow Studio, formerly Mustard Seed Massage on K Street, welcomes you to 1108 K Street NW. Same convenient downtown location. Same expert, hands-on care for massage, facials, and full-body wellness. New ownership, and the same commitment to giving you the calm, restorative experience you came here for.
Where Therapy and Relaxation Meet
Step away from the city for an hour. Step into a space designed to slow you down. Our licensed therapists deliver skilled, thorough bodywork in an unhurried environment, whether you are booking a deep tissue massage on a lunch break, prepping for a special occasion with a facial, or unwinding in our infrared sauna and salt therapy room.
Our Massage and Wellness Services
Not sure where to start? Here is a taste of what you will find under one roof. Each card links to its full page, and the button below opens the complete menu.
Facials & Skin Care
Customized facial treatments that restore balance, hydration, and radiance while you relax into some real self-care.
Infrared Sauna
Heat that penetrates more deeply than a traditional sauna, supporting muscle recovery, circulation, and a calmer nervous system.
Couples Massage
Two tables, side by side. Unwind together with a shared massage for you and someone you love.
Lymphatic Drainage
Gentle, rhythmic bodywork that eases puffiness, supports recovery, and helps your body flush and reset.
Reiki
A gentle, hands-on energy practice. Light touch, deep stillness, and a simple way to slow racing thoughts and feel more centered.
Assisted Stretching
A trained therapist gently moves and lengthens your muscles for you. Ease stiffness and leave feeling loose, in a calm 20 or 30 minute session.
Salt Room (Halotherapy)
Relax in a quiet room while breathing microscopic dry salt particles. Many guests use it for respiratory comfort, skin health, and stress relief.
Why Choose Spa Flow Studio
- More under one roof than most DC studios: an infrared sauna, a salt therapy room, and specialty bodywork like lymphatic drainage and craniosacral therapy.
- Couples massage with two tables side by side.
- Locally owned and right here on K Street, so you are a familiar face, never just the next appointment.
- Licensed therapists who get to know you and your body, then shape every session around what you need that day.
- A welcoming space for everyone, where every guest belongs.
What Our Clients Say
Guests rate the studio 4.9 stars on Google, and the owner reads every one.
"The best massage in DC. Dawn has magical hands. The place is lovely, clean and cozy."
- Flavia R.
"That was the best experience I've ever had. Perfect amount of pressure the entire massage. I was melting. Will be back!"
- Kendra C.
"It was calm, peaceful, and exactly what I was hoping for. I would definitely go back."
- Sophia T.
Visit Us in Downtown DC
1108 K Street NW, 2nd Floor, Washington, DC 20005
(202) 972-8004
Monday to Sunday, 10am to 8pm
Book online
You will find the studio in the heart of downtown DC, two blocks from McPherson Square Metro and a short walk from the Walter E. Washington Convention Center. See our contact page for full directions and parking.
Frequently Asked Questions
I used to come to Mustard Seed Massage on K Street. Has anything changed?
The address, the space, and the services you booked before are still here. The business is now under new ownership and rebranded as Spa Flow Studio. Your favorite treatments, massage, facials, infrared sauna, halotherapy, Reiki, and more, remain available.
Do I need an appointment, or can I walk in?
Appointments are recommended so your preferred time and therapist are held for you, and walk-ins are welcome whenever space allows.
Do you offer gift cards?
Yes. Gift cards make an easy gift for any occasion, and you can buy and send one online in minutes.
Can I use the infrared sauna or salt therapy room without booking a massage?
Absolutely. Book either one on its own, or add it to a massage for a longer reset.
Do you accept HSA or FSA cards for medical massage?
Yes. We accept HSA and FSA cards for medical massage and provide a receipt for your records. No referral is needed to book.
Ready to Relax?
Book online or give us a call at (202) 972-8004. We cannot wait to welcome you to K Street.