McLeod's, in Louth, had sandbags out and faced imminent flooding when a nearby river burst its banks.
But instead of damaging the business, it brought more customers in, owner Stuart McLeod told OLN.
"We became quite a tourist attraction because we are very close to the river – people were coming down to look at the river to see how high it was getting, and it was very good, I have to say," he said.
"It was like the tide coming in, but it didn't get to us. Trade hasn't dropped at all. Normally it boosts because of the hot weather, which we don't have, but we are holding our own," he added.