A machine for preparing a beverage, such as a beverage prepared from an ingredient selected from at least one of coffee and tea and chocolate and cocoa and milk and soup and baby food, comprising: - a body comprising a seat and a beverage processing line (1",1′′′) extending from a liquid inlet (1") to a beverage dispenser, the liquid inlet (1") being optionally connected to a source of liquid, e.g. water, such as a machine tank and/or an external liquid supply line, the liquid line (1",1′′′) extending optionally via a pump and/or a thermal conditioner such as a heater and/or a cooler; and - a service unit that is removably received in or on the seat and that comprises a foot part and a recipient part removably received in or on the foot part so as to be supported thereby, the foot part having a bottom face configured to rest on an external horizontal support surface when the service unit is removed from the seat, optionally the seat being delimited by a platform for supporting the service unit in or on the seat and/or for guiding the service unit into or onto the seat, the recipient part being configured to store: - un-used beverage ingredient and/or beverage liquid and/or cleaning fluid, to be supplied to the beverage processing line (1",1′′′); and/or - used beverage ingredient and/or waste beverage liquid and/or used cleaning fluid, collected from the beverage processing line (1",1′′′), characterised in that, when the recipient part is received in or on the foot part, the recipient part is movable relative to the foot part from a first stable position when the service unit rests on said external horizontal support surface to a second stable position when the service unit is received in or on the seat, and vice versa, the first and second stable positions being different. - a body comprising a seat and a beverage processing line (1",1′′′) extending from a liquid inlet (1") to a beverage dispenser, the liquid inlet (1") being optionally connected to a source of liquid, e.g. water, such as a machine tank and/or an external liquid supply line, the liquid line (1",1′′′) extending optionally via a pump and/or a thermal conditioner such as a heater and/or a cooler; and - a service unit that is removably received in or on the seat and that comprises a foot part and a recipient part removably received in or on the foot part so as to be supported thereby, the foot part having a bottom face configured to rest on an external horizontal support surface when the service unit is removed from the seat, optionally the seat being delimited by a platform for supporting the service unit in or on the seat and/or for guiding the service unit into or onto the seat, the recipient part being configured to store: - un-used beverage ingredient and/or beverage liquid and/or cleaning fluid, to be supplied to the beverage processing line (1",1′′′); and/or - used beverage ingredient and/or waste beverage liquid and/or used cleaning fluid, collected from the beverage processing line (1",1′′′), - un-used beverage ingredient and/or beverage liquid and/or cleaning fluid, to be supplied to the beverage processing line (1",1′′′); and/or - used beverage ingredient and/or waste beverage liquid and/or used cleaning fluid, collected from the beverage processing line (1",1′′′), characterised in that, when the recipient part is received in or on the foot part, the recipient part is movable relative to the foot part from a first stable position when the service unit rests on said external horizontal support surface to a second stable position when the service unit is received in or on the seat, and vice versa, the first and second stable positions being different.