Bliss SPA, first SPA center in Russia, is located in 5-star W Hotel at the very center of Saint-Petersburg. Interior design has been conceived by a Milano company named Antonio Citterio Patricia Viel and Partners S.r.l.

CTK-Lighting Technical Company was in charge of project development of interior lighting and supply of lighting equipment produced by Modular Lighting Instruments, Flos and Terzani. CTK was in charge of installation. 

Project was realized in 2011.