What Protocol has said is true in the case of a gift. However, the first €6,000 would be disregarded, so you would each lose €7,000 of your respective Group A and Group C thresholds of €280,000 and €15,075 respectively (I have assumed that "us" and "we" refers to you and your partner or spouse).
However, you have indicated that it's a loan, in which case it is not a gift on first principles. There is a taxable element under what is called "free use of property" though. However, the annual deemed value of this benefit is tiny (€200 max) based on current deposit rates and should not create any issues (e.g. tax returns, etc). Just document it between yourselves, and kick on.