The new room concept, at 129 sq ft, is is said to provide a "cocooning environment", and will be priced from £55 per night.
The rooms come in six colours and can be configured in 10 different ways, including as two style of family rooms. Old bunks have been replaced by a double bed and an additional pull-down bed with Ibis Budget's SweetBed concept.
Storage space is minimal, with built-in coat racks and a bed height that allows room to slide a suitcase underneath.
The nest room concept will initially roll out in 110 rooms of 269 at the London Whitechapel hotel, and across all 134 rooms at the Ibis Budget Luton Airport opening in August. The concept will then be gradually integrated across the chain as renovations and new buildings come on-stream.
At the end of December 2016, Ibis Budget had 570 hotels in 17 countries. AccorHotels has more than 4,100 hotels, resorts and residences around the world.
Karelle Lamouche, senior vice president of budget and economy brands at AccorHotels UK, said: "The new Ibis Budget room, nest is evidence that we really re-define the boundaries of the guest experience in the budget segment. We are pleased to be launching it in central London for those who need the ultimate comfort at an affordable price whilst accessing the city."
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