Schwarzer believes the Bulgarian's arrival could prove to be a masterstroke by manager Martin Jol.
"Dimitar Berbatov is an excellent player," the Australian told the club's website. "Everyone knows what a great player he is and he's been excellent for us since the day he arrived.
"He's a top pro who is happy to help out the young boys and I think he's a massive plus for us and we've seen that in the games he's played.
"When you've got new players added to the squad, it's always important to have that core of a team that have the experience and know what it's like to play for Fulham Football Club.
"I think the players that have come into the club have done extremely well."