It was nice, but I don't think I need to go there a second time.
I had a good time, but I don't feel like I want to go again.
この場合、次のような言い方ができますよ。
ーIt was nice, but I don't think I need to go there a second time.
「素敵だったけど、2回目行く必要はないと思う」
I don't think I need to go there a second time.のように言うと良いでしょう。
ーI had a good time, but I don't feel like I want to go again.
「楽しかったけど、また行きたいとは思わない」
I don't feel like I want to go again.のように言っても良いでしょう。
ご参考まで!