The University of Hertfordshire’s Cube project offers users a carbon-neutral living space if only they can manage the tight quarters. The 3mx3mx3m (27sq. meters total) cube is an experiment in sacrificing space for common well-being. Eco-friendly materials make up the sliding partitions that somehow leave enough room for a dishwasher. A toilet collects waste for composting and its heating system relies heavily on solar panels. The bed is four feet long, maybe leaving something to be desired.
As described by the creators.
Constructed from a variety of sustainable materials, the Cube provides everything that a single person (or two friendly people) might need. Within its 27 cubic metres it includes a lounge, with a table and two custom-made chairs, a small double bed (120cm wide), a full-size shower, a kitchen (with energy-efficient fridge, induction hob, re-circulating cooker hood, sink/drainer, combination microwave oven and storage cupboards), a washing machine, and a composting toilet. Lighting is achieved by ultra-efficient LED lights, and the Cube is heated using an Ecodan air-source heat pump, with heat being recovered from extracted air. It has cork flooring and there is two-metre head height throughout.