The Muzentoren in The Hague served as an office building and has been transformed into two hotels with a total of more than 300 rooms. The two hotels are operated as Moxy Hotels and Residence Inn hotel (brand names of Marriott International). The building process took into account the BREEAM (Building Research Establishment's Environmental Assessment Method) certification. BREEAM is the world's leading method for assessing the sustainability of projects in the built environment. In line with the 'BREEAM-NL New Construction and Renovation 2014 v2' guideline, the Muzentoren project achieved the 'Very Good' rating.