A good number of Bayern Munich players made the journey to the Spanish island after they were given two days off following a 3-1 defeat to Mainz last weekend.
Bayern had already secured their 10th straight Bundesliga title before the defeat but their jaunt still drew criticism from club great Lothar Matthaus and Hertha Berlin manager Felix Magath.
Nagelsmann however insists there is little he can do to stop his players from having fun during their off days.
The 34-year-old told reporters ahead of Sunday's home game against Stuttgart: "I am responsible for the team, for everything sporting, for training, planning, for the content and the preparation of the games.
"I lived up to my responsibility by giving two days off. Our players are all old enough and of legal age. They can also decide for themselves what they do on their days off.
"If they decide to fly there as a very large group, they should do so. They're old enough - I'm not their Dad or their tutor.
"Instead, together with Holger Broich [Bayern's club doctor], I have the task of designing the training plan in such a way that the load structure makes sense.
"That's why we gave the days off. The players can do whatever they want on their days off."
