Explore by goal
Everyone sees a part of you. We see the whole picture. We start with who you are and what your goals are.
Explore our memberships
Our memberships are designed to meet your challenges.
Who we are
Find out everything about us.
Every membership starts with a 360° intake. We look at your training history, lifestyle, nutrition and sleep. Then we build a structure around your goals and your life. Dedicated to you.
One-on-one coaching built around your whole picture: training, nutrition and lifestyle, working together instead of apart.
Personal coaching in a small group, built around consistency, structure and a community that pushes you forward.
We bring your training, lifestyle and context together into one system.
24/7 support & accountability through our app
Guided by a specialist who knows your body better than you.
Progress that doesn't reset when life gets busy, because the plan accounts for your real life, not just the workout.
Train in a private, non-intimidating space alongside people who hold the bar high.
Most fitness offerings focus on one thing. ONE brings everything together.
We look at where you are now. Training history, lifestyle, nutrition, sleep. Your plan starts here.
Together we decide what success looks like. Clear targets, specific timelines, built around your life.
Your training and nutrition plan is built around your goals, your schedule and where you start. Adjusted as you progress.
Regular check-ins and measurements keep your progress visible. Your coach uses the data to keep your plan sharp.
Between sessions, your trainer stays close. Questions answered, adjustments made, accountability kept.
Giulia Battaglia, 33
In just six months, I’ve lost weight, built strength, and achieved more than I thought possible. This gym’s professional approach, personalized programs, and supportive environment make it a great choice for anyone serious about their fitness goals.
Giulia Battaglia, 33
Franca Cumbo, 54
Semi Private Training Basic
Barbara van Erp, 56
Rick Luger, 36
Private Training Basic
Love this gym! The vibe, the concept and the energy - all spot on. It is the most inspiring and supportive workout community I have been part of.
Eerika Roos-Kulvik, 35
Jonathan Butler, 31
Personal Training Premium
This place is more than just a gym; it’s truly a life-changing space. I’ve been training here for two months now, and I never imagined I would get this committed to my fitness journey.
Erdal Aydin
Siobhan D'Abreu, 30
Personal Training Basic
Came back to training after a long break (and I’ve been working out for years) and honestly ONE has been the best training I’ve ever had. In just 3 months I’ve had amazing results, proper body recomposition and I feel stronger/leaner already. The sessions really push you, but in a good way and it actually works.
Panos Ellinas
Barbara Van Erp, 56
Personal Training Basic
I’ve been blown away by my experience at One. It’s a gym that feels personal, like an actual community. When I started doing private sessions with my trainer, I immediately felt how closely my progress was being monitored to make sure I had the tools to succeed. You’re not just clocking into a class and clocking out. There are real people here who genuinely CARE about your success.
Melyssa Griffin, 37
Jurriaan Puijpe, 31
Semi Private Training Premium
Joined ONE at the end of March and it’s honestly been one of the healthiest changes I’ve made this year. What I appreciate the most is how sustainable the approach feels — not just “go hard at the gym”, but actually building habits that fit my real life structure. A definite additional call out is for ONE environment which is welcoming, motivating and grounded. Very happy I started this journey here.
Gabriel Martins, 41
Olga Pakholiuk, 33
Personal Training Basic
Training at One has genuinely changed my life. I don’t just feel physically better than I ever have — I’m emotionally stronger too. The trainers here are incredibly dedicated; they truly understand life’s challenges and know exactly how to adapt your program to get the most out of you, even on days when you’re exhausted or emotionally drained. The environment is wonderful. Everyone is friendly, and you can tell people genuinely want to be there. It’s an incredible place, and I’m so grateful I found it. Highly recommend to anyone looking for more than just a gym.
Natalie Wills, 44
Louise Schalkwijk, 49
Semi Private Training Premium
Mirjam Schuele, 45
Private Training Premium
After losing a family member, I understood that health cannot wait. I built ONE to be more than a gym. A place where real support meets real people. So you progress in real life.
Membership plans starting from only €83 per week.
Yes. You can pause for up to 4 weeks per calendar year, taken as 2+2 weeks or 4 consecutive weeks, with 4 weeks' notice. For cancellation: cancel at the end of your first 4-week period with no notice. After your second period begins, we ask for 4 weeks' notice. Both are handled in the Trainin app. (Note: pausing doesn't apply to one-off Flex packages.)
Our group classes are our Semi-Private Training (SPT) sessions: small-group, coach-led, and structured around twice-a-week training. Beyond that, we run community events and the occasional challenge or competition, like the ONE Open, but SPT is the core class offering.
Personal training is included in all three PT memberships — Basic (8 sessions), Premium (8 PT + 4 SPT), and Platinum (12 sessions). It's also part of the Semi-Private Premium membership (1 PT session per month) and available as a standalone PT Flex package.
No, you don’t need any experience. We build the confidence, knowledge and strength from the ground up.
Book a free consultation by leaving your details. Our Customer Success Team will reach out and set it up. In this call you will talk through your goals, what's motivating you to change, and what's held you back so far.
Semi-Private memberships run from €329 to €399, and Personal Training memberships from €789 to €1,149. Billing is every 4 weeks rather than monthly, with the first payment due before your intake session. Flex packages (one-off) start at €675 for SPT and €1,650 for PT.
There's no strict minimum, but our standard memberships are best suited to roughly 20–75 years old. We don't recommend targeted, machine-based strength training under the age of 12, bodyweight work is the better approach at that stage. For younger people we run our Stronger Future programme, and for those 65 and over we have our Golden Age class. Both are free, our way of giving back to the community.
Book your visit and see how training, lifestyle and context come together in one system, built around you.
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