[1] Calling itself as a provider of "affordable luxury" hotels,[2] citizenM has since expanded its portfolio across North America, Europe and Asia.

[2] In March 2019, GIC Private Limited acquired a 25% stake in citizenM, valuing the company at $2.3 billion.

[8] In March 2024, reporting indicated that citizenM's owners were exploring business options with the help of Morgan Stanley and Eastdil Secured, which may include a potential sale valued at approximately €4bn[9] citizenM hotels embrace the International Style, having large glass windows and black metal cladding, making use of off-site modular construction for many of the components.

[10] Some of the locations make use of large scale public art, such as by Julian Opie at Paris Charles de Gaulle Airport.

[11] The original hotel at Schiphol Airport in Amsterdam was opened in 2008 and was designed by the Dutch architectural company Concrete.