YOU SAID:

I sleep at night in my bed.

INTO JAPANESE

私はベッドで夜は寝ます。

BACK INTO ENGLISH

I go to bed in bed at night.

INTO JAPANESE

私は夜に寝る。

BACK INTO ENGLISH

I go to bed at night.

INTO JAPANESE

私は夜遅くに寝ます。

BACK INTO ENGLISH

I go to bed late at night.

INTO JAPANESE

私は夜遅くに寝ます。

BACK INTO ENGLISH

I go to bed late at night.