3 sentences

1. 旅客正在前台办理入住。

   lǚ​kè zhèng​zài qián​tái bàn​lǐ rù​zhù.

   The traveler is checking in at the front desk.

   Source: Dong Chinese Dictionary

2. 你可以免费入住。

   nǐ kě​yǐ miǎn​fèi rù​zhù.

   You can stay for free.

   Source: OpenSubtitles

3. 他自从入住后就没离开过房间。

   tā zì​cóng rù​zhù hòu jiù méi lí​kāi guo fáng​jiān.

   He hasn't left his room since he checked in.

   Source: OpenSubtitles