The best towel racks for small bathrooms are compact towel bars and space‑saving hooks. A 12-inch towel bar is ideal for a single bath towel, and 8 or 9-inch bars fit well beside a sink for hand towels.
If you have very limited wall space, a 6-inch double towel bar adds more drying room in a small footprint. Swivel towel hooks are another good option because they take up minimal wall space and can hold multiple towels or robes on separate arms.
How far from the edge of the door should I make the bore hole (for a hidden/concealed hinge)?
The bore hole should be made 3mm from the edge of the hinge cup.