Got this response, so it seems they do have them (for rooms with smaller beds at least).
We can offer non-smoking Standard twin room and Standard single room.
If you would like to have any other room types, we will parepare cigarette smell eliminated room for you.
Odd the website only showed this message for any date I entered:
Smoke-free rooms not available for your dates.
Accessible rooms not available for your dates.
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