The 51-bedroom property will be the fourth venture from Living Rooms, which currently operates a boutique hotel and two serviced apartment businesses in London.
Stringer most recently worked as general manager of a number of properties for De Vere Venues, which was bought by Starwood Capital Group for £231m last year. Having started her hospitality career in human resources at the Royal Lancaster hotel and after working for Forte, Stringer moved on to become operations manager at the Old Ship hotel before joining De Vere seven years ago.
As general manager of the Laslett, Stringer will be responsible for the customer experience, sales and revenue delivery, as well as being in charge of assembling a strong and dedicated team.
She said: "I am delighted to be a part of this exciting new chapter for Living Rooms. It is not often you have the opportunity to be involved in a hotel opening that is so unique and in such an iconic location."
The Laslett, which will open across five properties in Pembrige Gardens, is named after Notting Hill legend Rhaune Laslett, original organiser of Notting Hill Festival, the forerunner of the Carnival.
The neighbourhood-focused lobby will comprise the Henderson bar - a café and bar-kitchen named after the Trinidadian musician Russell Henderson, another founding father of the Carnival - a gallery and a store. Local suppliers will be championed with produce sourced from Sally Clarke (of nearby Clarke's restaurant, bakery and shop), and Neal's Yard Dairy.
Architectural and interior designers Waldo Works is aiming to combine a look that is "hip and homely", with the eclectic, cultural heritage of Notting Hill.
The hotel will join sales and marketing consortium Small Luxury Hotels of the World upon opening.