YOU SAID:

The only one who is in this house and he was so very good.

INTO JAPANESE

この家にいる唯一の人、彼はとてもとても良かった。

BACK INTO ENGLISH

The only person in this house, he was very good.

INTO JAPANESE

この家で唯一の人、彼はとてもよかったです。

BACK INTO ENGLISH

The only person in this house, he was very nice.

INTO JAPANESE

この家で唯一の人、彼はとても素敵でした。

BACK INTO ENGLISH

The only person in this house, he was very nice.