Mattress actress Bree Olson may not be one of Charlie Sheen's goddesses anymore, but she doesn't have anything bad to say about him.  Especially when it comes to his coital prowess.

Bree tells the new issue of "Playboy", "He's intelligent, he's charismatic, he's superfunny.  And he's good in bed.  I mean, he's had a lot of practice."

"He's gentle and considerate .  He's just a rock star.  He's a powerhouse.  He's a very sensual and sexual person, and when I was with him I felt as if we became one together, because he's just so enticing sexually."

But even though she's bisexual, Bree was NOT getting it on with Charlie's other goddess, Natalie Kenly.  She says, "That was a lie.  I didn't really even know her.  Okay, all three of us got together, I think, twice.

"They did their thing together, and Charlie and I did our thing together.  And we had two different beds.  She and I would go to whichever bed, and he would pick. You know, 'Where am I sleeping tonight?'"

By the way . . . Bree is done with porno, and she's trying to become a legit actress.  She says, quote, "I can do this.  I'm so winning right now."