I use a blue Zero-G drinking water hose that I got at the RV dealer's shop. I think it's 50 feet. It rolls into a small plastic tote that I keep it in, with my water filter. I also cap the ends after I drain it and stuff it into the tote, to help keep the hose and threads clean. See photo.
https://drive.google.com/file/d/1wqx...ew?usp=sharing