The Dorchester Collection is closing Rome's Hotel Eden so that the property can undergo a major facelift of its guestrooms and dining facilities and a new spa be installed.
From November 1 until autumn next year, the hotel's luxury rooms and suites will be modernised, along with the lobby.
The total number of guestrooms will decrease from 121 at present to 99 post-refurbishment.
These works will be under the guidance of Bruno Moinard of 4BI and Associates, who also redesigned parts of the Plaza Athenée in Paris.
Patrick Jouin and Sanjit Manku will be in charge of revamping the restaurants, bar and spa.
A statement said: "The restoration will blend contemporary features with the charm and authentic classic Roman style of the property."
The hotel, which dates back to 1889, will close for the entirety of the works.
General manager Luca Virgilio said: "Hotel Eden has a rich heritage and a prominent location in the heart of Rome. While it continues to rank as one of the top hotels in the world, the restoration programme will revitalise the property and lead it into its next chapter."
Hotel Eden joined Dorchester Collection two years ago (see news, September 2013).