A hose reel unit for a high-pressure washer has a hose reel and a reel hose arranged in its receptacle. The hose reel is rotatable about an axis of rotation for winding and unwinding the reel hose. The first end of the reel hose is connectable to a supply line and the second end to a washer wand of the high-pressure washer. The hose reel has sidewalls delimiting the receptacle in a direction of the axis of rotation. The first end of the reel hose extends to the first sidewall and is coaxial to the axis of rotation. A guide device arranged between the sidewalls guides the reel hose such that the axis of rotation extends through the reel hose. The guide device is spaced apart form the first end of the reel hose at a support distance measured in a direction of the axis of rotation.