I don't know the exact price as we didn't have breakfast at the hotel ourselves. Some of our group did and I think it was over £10 each for a buffet which received mixed reviews in quality. For those who did have breakfast I think the consensus was that it was ok, but perhaps not worth the money given that a lot of places in town are quite cheap.
I think it is perhaps a matter of convenience over value. As the hotel is only 10 - 15 mins from the old town, I would perhaps think about having breakfast out.
Hope this is of use.
breakfast costs 14,- Eur.
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