Yeah German hotel but i added the option breakfast for 13€ and i got charged 28€ for breakfast ?
What was the hotel? when making the booking, what was the total price including taxes? was the hotel charge in line with this?
Was this 1 breakfast for 1 person or 2 person having breakfast. If 2 people then that would bump it straight to €26. 7% tax would cover the remaining €2 ( if rate display was tax exclusive )