The former right-hand woman and wife of multi-millionaire Paul Sykes for over 40 years until they divorced, Valeria understands business and development and was involved in every aspect of the conversion.
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A team of craftspeople restored and reproduced period features in the grand Palladian property. This is Grantley Hall's morning room.
There are 47 rooms and suites and the custom-made beds are from Yorkshire-based Harrison Spinks. Prices start from 345 per night up to 5,000 per night for the presidential suite.
The rooms are furnished in contemporary country house style. The art and furnishings were handpicked by Valeria Sykes and sourced from a variety of local artists, artisans and suppliers.
An executive bedroom. Large bottles of Yorkshire speciality damson gin from Raisthorpe Manor at Malton feature in all bedrooms for guests to sample.
The attention to detail is exceptional. Grantley Hall owner Valeria Syke says: I know I can be difficult to work with and I apologise but I am a perfectionist and I want everything to be right.".
Palladian revival architecture has been restored by heritage craftspeople.
One of the spacious bedroom suites at Grantley Hall, which is close to Fountains Abbey.
Top chef Shaun Rankin will operate a 38-cover restaurant. There are three other restaurants and afternoon tea is served. Valeria's is a champagne and cocktail bar.
The gardens have been restored. Grantley Hall was built by Thomas Norton and his son Fletcher Norton in the early-1700s based on a Palladian design. Guests included Queen Mary and the Princess Royal, prominent politicians and society families.
It took three-and-a-half years to convert and restore Grantley Hall while creating new buildings sympathetic to the historic architecture