Glass is the only neutral vessel: it does not impart taste, does not absorb odours, and does not degrade over heat cycles.
For a five-star hotel, water on the table is not refreshment — it is a cue. The transparency of glass tells the guest the kitchen takes details seriously. Plastic, on the same table, says the opposite.
This is why every premium European water brand bottles in glass. And it is why BoluPınar does too.