Entering the grandiose threshold of the Grade 2 listed edifice, one might expect a health club ambiance, but Grace Belgravia’s doorway feels more like a cozy parlor. Forget sterile walls and clinical uniforms; you’re enveloped in warmth, greeted by a sprawling library, crackling fireplace, and inviting armchairs.

Ascend the stairs, and the mood shifts, evoking a medical milieu. At Grace, health isn’t a fleeting notion but a lifelong pursuit. With a roster boasting over forty practitioners, their repertoire spans from tackling sleep and eating disorders to combatting anxiety and depression, offering an array of services from hormone nutrition to laser treatments and fertility clinics.

My excursion was centered around their one-day Cleanse Me program, a departure from typical spa indulgences, promising enduring wellness dividends.

After the obligatory paperwork shuffle, I found myself in the infusion clinic, gearing up for my first regimen: an intravenous vitamin infusion. This wasn’t just any treatment—it was the coveted elixir promising 100% nutrient absorption straight into the bloodstream. As the needle found its mark, I eagerly anticipated the rejuvenating effects.

Glutathione, an antioxidant booster, primed my system before the IV drip commenced, while a verdant spinach smoothie accompanied my therapeutic stint. Nestled in a cozy corner with a TV for company, I underwent the immune-boosting infusion, a concoction of vitamin C, zinc, and antioxidants, tailored for the cold-prone.

Post-drip, I sauntered down to the studio for “Raise the Barre,” a fusion of ballet, cardio, and Pilates—a harmonious symphony sculpting and energizing muscles, with the instructor’s undivided attention intensifying the burn.

Replenishment beckoned at the on-site restaurant, where culinary wizards crafted a palette of vibrant, nutrient-rich fare. No calorie tallies here; instead, diners choose from ‘a little,’ ‘a little more,’ or ‘a lot.’ My feast commenced with almond butter and crisp veggie sticks, segued into veggie quinoa sushi rolls, before concluding my culinary journey.

The denouement awaited at the spa—a rendezvous with the Capri Palace Leg School Treatment, a clandestine cellulite remedy reserved for the select few. Despite my initial skepticism, the regimen, tailor-made for desk-bound souls and jet-setters, proved revelatory.

Nestled in a steam-filled chamber, my legs were pampered with a medley of cold mud and ice-cold bandages, inducing a tingling symphony. A series of massages ensued, culminating in a dance of hot and cold, coaxing circulation to a rhythmic cadence.

Emerging with limbs as buoyant as feathers, I savored an alkaline smoothie, feeling akin to Wonder Woman the next morn. Whether it was the vitamin infusion finally taking root or the collective synergy of treatments, one thing was certain: the Cleanse Me Programme worked its magic.

For those enticed by this transformative journey, the one-day Cleanse Me Programme awaits, priced at £370.

Grace Belgravia, now a relic of bygone days, has closed its doors permanently. 11a West Halkin Street London SW1X 8JL Tel: +44 20 7235 8900