Whilst we're on bath linen I thought I'd add my own penny's worth. Am I the only person who is annoyed by those ubiquitous signs in hotel bathrooms urging us to reuse our towels to help the environment? For I suspect that there are far different motives for encouraging this guest behaviour. As such I would be happier if those notices were reworded in the following vein.
Towels put in the bath: Please exchange
Towels replaced on the towel rail: I'll use again
Please help for the sake of our profit margin.