One thing I don't like about my dad is that he's such a slob.
I hate that my dad never helps tidy up around the house.
この場合は、次のような言い方ができます。
ーOne thing I don't like about my dad is that he's such a slob.
「父の嫌いなところはだらしないところです」
slob で「だらしない人」
ーI hate that my dad never helps tidy up around the house.
「父が家の片付けを全くしないところが嫌だ」
このように言っても良いですね。
ご参考まで!
My dad can't tidy up after himself and that's something I don't like about him.
My dad is incapable of cleaning up and that's what I find not so admirable about him.
ご質問ありがとうございます。
① "My dad can't tidy up after himself and that's something I don't like about him."=「私の父は片付けが出来ない人で、それは私が父に関して、好きではない部分です。」
② "My dad is incapable of cleaning up and that's what I find not so admirable about him."=「私の父はきれいにすることが出来ない人で、それはあまり彼の立派ではない部分だと思います。」
ご参考までに。