Where to be beastly, lying? (4)

I believe the answer is:

lair

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'where to be beastly lying?' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.

This is the entire clue.

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(Other definitions for lair that I've seen before include "A nautical hail" , "Home of a beast" , "secluded spot?" , "Habitat of a wild animal" , "Supposed large ape, the Bigfoot" .)

I've seen this clue in the Evening Standard.

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