Zhǎo Cè suǒ
                                            找 厕 所
                                     Find a Restroom
Subject
There are many ways of saying "Toilet" in Chinese，such as : Xishoujian (hand-washing room), Weishengjian (hygiene room), or Huazhuangjian (making-up room) . You could say "Qu cesuo" (go to the toilet), or "Wo qu fangbian yixia" (I want to use the lavatory), or "Wo chuqu yixia" (I want to go out for a while). In some places you will be charged 100cents one time for using the toilet.

重点词 Key Words
厕所 cè suǒ toilet
洗手间 xǐ shǒu jiān toilet; make-up room
电梯 diàn tī elevator
打扰 dǎ rǎo trouble; bother
附近 fù jìn nearby

会话示例 Dialogue
Ⅰ(In a restaurant, a man wants to go to the restroom.) 
                 duì bù qǐ ， wǒ yào qù yī tàng xǐ shǒu jiān 。
顾 客 ： 对　不 起 ，我 要　去 一趟　洗　手　 间　。
Customer: Excuse me, I need to go to the restroom.
(To the waitress)
                    xiǎo jiě ，qǐng wèn ，xǐ shǒu jiān zěn me zǒu ？
顾 客 ：　小　姐　， 请　问　，洗手 间　怎 么 走　？
Customer: Excuse me please, where is the restroom?
                         xǐ shǒu jiān zài diàn tī de yòu biān 。
服 务　员　： 洗 手  间　在　 电梯  的 右　边　。
Waitress : It’s on the right of the elevator.
            fēi cháng xiè xiè 。
顾 客： 非   常   谢　谢　。
Customer: Thank you very much.
Ⅱ(On the street)
　　　              dǎ rǎo xià ，fù jìn yǒu cè suǒ ma ？
女　士　A：　 打 扰　下，附 近　有　厕 所　吗 ？
Woman B : Excuse me, is there any toilet nearby?
　　              wǎng qián zǒu 50 mǐ zuǒ yòu 。
路 人　：　　往　 前　走　50 米  左　右　。
Passerby : Go straight ahead about 50 meters.
               Xiè xie.
女 士 A： 谢 谢。
Woman A : Thank you.