Turner made her first appearance away from her role as Stacey Branning in the first episode of the BBC Three show's third series last night.
"She's awesome, she's brilliant," Turner, who plays vampire Mitchell, said. "It's not enough credit to say she's highly professional but that's what she was. She's such a lovely girl, sort of reserved and quite quiet and I think she's amazing - she's done some fabulous stuff.
"And she's only ever really done EastEnders, so to come in and do it, she's very fluid. Everyone enjoyed it and we were talking about it for weeks afterwards."
He added: "The producers say her scenes look great and that the scenes in limbo look great."
Lacey will return as Lia in the final episode.
Being Human continues on Sunday at 9pm on BBC Three.
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