Players usually have their own rooms on away trips but Klopp decided he wanted them to share during their four-night stay at the five-star Hotel Principe Felipe as part of his team-building exercise.
Reds captain Jordan Henderson is in with Sheyi Ojo, while vice-captain James Milner has Sadio Mane for company.
“We had this little funny gimmick. Bringing the players together by putting them in twin rooms,” Klopp told the ECHO.
“It wasn't a free choice! I picked the names out of the hat.
“Lallana and Manninger. Henderson is with Ojo, Milner with Sadio. Firmino and Karius – nice room!