Japanese hospitality company Fujita Kanko will invest US$90m (67.47m euro, £56.66m) renovating its flagship property in Tokyo, Hotel Chinzanso, over the next three years.

The hotel - which had operated under the Four Seasons' name for 20 years until its relaunch on New Year's day this year - is home to Tokyo's largest hotel spa, Yu, and has 260 rooms and suites, 12 restaurants, and 36 meeting rooms.

The 22,550sq ft Yu Spa includes five single and two double treatment rooms with 40 treatments on offer including a wasabi body treatment and pregnancy treatments.

The spa uses Elemis and Aromatherapy Associates skincare products, and camellia oil – also known as tsubaki oil – is used in many of their treatments.

Details of the hotel’s renovation are to be released at a later date, though some guest rooms will be upgraded with feature bathrooms to maximise views.

The hotel has also recently added rooftop wedding and event space Serenity Garden and Café Foresta, which specialises in sweets.

Set on a 17-acre botanical garden, including around 1,000 camellia trees, the hotel's new name means "villa on a mountain of camellias" and camellia jams and oils will be available to dining guests during January and February.

The hotel has just launched a series of Japanese cultural programmes for its international guests, including traditional Japanese tea ceremonies, bonsai tree workshops and Japanese language and etiquette classes.

Established in 1955 and headquartered in Tokyo, Fujita Kanko has more than 50 properties to its name and is a publicly-traded corporation.