It is located at 5–6 Halkin Street in Belgravia, one of London's most affluent districts, just to the east of Belgrave Square.

[1] The hotel has a Georgian façade of brick and stone, but its interiors (including its 41 rooms and suites) have a more contemporary design.

The company spent about £1 million on each of the 41 guest rooms and suites, which were designed by Laboratorio Associati Italy.

[2] COMO The Halkin originally hosted a Michelin-starred Thai restaurant named nahm, run by Australian chef David Thompson, from 2001 until December 2012.

[4] In March 2013, a new restaurant was opened called Ametsa with Arzak Instruction[5] (commonly referred to as simply Ametsa), serving Basque cuisine and run by a team that includes Elena Arzak and her father Juan Mari Arzak.