To make all the towels very-well organized, some storage is needed to comply with. Towel tabs are the best option. The use of tabs is a smart choice if practicality as well as space efficiency are what you are emphasized. As for the location, anywhere in the room can be used, especially some area on the wall or behind the entrance.
Tip 1. Set up some storing tabs designed specifically for your towels.
Right now, there are a few tips of designing a whole organizer set in the bathroom, including a couple models of organizers that are designed for organizing some particular things. Here you are: