By Laura Forsyth Taking a break from the hustle and bustle of work to relax is crucial, and what better way to unwind than at the spa? With numerous new spa trends and facilities emerging across London,City A.M. ventures into the world of wellness to explore the latest offerings. In this feature, City A.M. set out to discover the ultimate indulgence: the best luxury spa days for hydro massage in London. Our journey led us to experience the unique hydro massage treatment offered at The HVN in Knightsbridge, home to the UK’s only hydro bed. Find a luxury spa day for hydro massage Nestled just mo…