Don't choose the first or second floor.

别去一楼二楼。

youdao

I live on the second floor, and he lives on the first floor.

我住在二层，他住在一层。

youdao

But it's kind of hard to get started studying when you have to relieve yourself in the third floor bathroom every five minutes (it's more trainquil than the ones on the first and second floor).

不过当你不得不在三层厕所（一、二层太挤）每五分钟放松下时，开始学习对你来说有些困难。

youdao

I live on the second floor, he lives on the first floor.

我住在二层，他住在一层。

普林斯顿公开课 - 人性课程节选

The man who was rescued by firefighters made his way from a second floor flat to a first floor window.

BBC: Man rescued from blaze

"If you don't like the view on the first floor, go look out the second floor, " she said.

WSJ: Dunes vs. property rights in storm-battered NJ

This happened -- his first stop in the second-floor ICU was in her room, spent about 10 minutes there with members of her family, with her husband.

WHITEHOUSE: Press Briefing