Mat etiquette in jiu-jitsu starts with a clean gi every class. For one adult training three nights a week that means a rotation of two or three gis and a washer running most evenings. For a household with a parent and two kids in the program it means a steady stream of wet cotton, rash guards, belts, mouthguard cases and damp bags coming through the door at nine at night, long after anyone wants to think about laundry.
How a house handles that load depends less on the washer than on the route to it. In many homes the door from the garage opens into a hallway or a kitchen, and the laundry sits on the far side of the house. A wet bag carried that distance drips, smells and gets set down somewhere along the way, usually on the floor beside the door, where it stays until morning. Gis left balled up overnight hold moisture and odor, and the habit of unpacking straight into the machine is easier to keep when the machine is close.
The care side is mostly settled knowledge in the sport. Cotton gis shrink in hot water and hot dryers, so cold washes and air drying are the norm, and dry desert air makes air drying quick. A rack in the garage or a line on a shaded patio handles most of it, though hours of direct afternoon sun will fade a colored gi over time. Rash guards and spats go in the same cold cycle and should never sit in a closed bag until the weekend.
For a household weighing a remodel, the floor at that entry is a sensible first question. Kingdom & Co. in Las Vegas, a design/build firm, answers a flooring question in its FAQ by noting that luxury vinyl plank has become a common choice in high-end homes, especially in kitchens, mudrooms and secondary living areas where durability matters. A family that watches a wet gym bag hit the floor by the garage door every night might look at that answer as a starting point for the entry it actually uses, rather than the one guests see.
The fixes that cost nothing come first. Put a hook or a bin by the door from the garage and make it the only place a training bag is allowed to land. Pull the gi, belt and rash guard out before dinner, not after. Hang anything that cannot go straight into the wash where air moves through it. Keep a spare gi in the car for the night the rotation runs short, and wash the bag itself every couple of weeks, because the bag is usually where the smell actually lives.