In this work, Raman spectroscopic study of hydration shell water surrounding three different sizes of commercially procured, citrate-stabilised Au NPs is discussed. In order to reveal the influence of the presence of the Au NPs on water in the system, dilution series with water were prepared and the gradual changes in spectral profiles were followed. The solutecorrelated spectra were compared with the spectrum for bulk phase liquid and conclusions were drawn about the state of hydrogen-bonding network around the nanoparticles.