"After years of therapists and psychiatrists, working with Serva was the first thing that actually helped me move forward — by finally feeling safe enough to be vulnerable."
Private client
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.
At ONE, great results start with the right people. Our trainers specialise in strength, recovery, performance, nutrition and lifestyle coaching. They're matched to your goals from day one and backed by a system that keeps your progress moving.

Every trainer at ONE works within a structure. They're mentored, supervised and held to the same standard we hold our clients to. Each week, the full team reviews results across the board: who is progressing, who needs more support and how we adjust. You don't just get a trainer. You get the whole team, applying the ONE Method.







"After years of therapists and psychiatrists, working with Serva was the first thing that actually helped me move forward — by finally feeling safe enough to be vulnerable."
Private client
Olga Pakholiuk, 33
Personal Training Basic

Rick Luger, 36
Private Training Basic

Giulia Battaglia, 33

"After my stage 3 cancer diagnosis, four months of coaching with Serva helped me make peace with my body, reconcile with a sister I hadn't spoken to in ten years, and face treatment as an adventure instead of something happening to me."
Beverly
Barbara van Erp, 56

Franca Cumbo, 54
Semi Private 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
Barbara Van Erp, 56
Personal Training Basic

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
Jonathan Butler, 31
Personal Training Premium

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
Jurriaan Puijpe, 31
Semi Private Training Premium

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

Louise Schalkwijk, 49
Semi Private Training Premium

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
Siobhan D'Abreu, 30
Personal Training Basic

Mirjam Schuele, 45
Private Training Premium

Book your visit and see how training, lifestyle and context come together in one system, built around you.
Thanks for reaching out. We will be in touch shortly.