Called the "Nexstand laptop stand", bought it almost 5-6 yrs ago and it's been very durable.

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https://www.amazon.ca/Nexstand-Laptop-Stand-Adjustable-Universal/dp/B01HHYQBB8/ref=sr_1_7?crid=2S5GFSKC1INLV&keywords=foldable+laptop+stand&qid=1672296012&sprefix=foldable+laptop+stan%2Caps%2C108&sr=8-7

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https://www.amazon.com/Nexstand-Laptop-Stand-Portable-MacBook/dp/B01HHYQBB8/ref=sr_1_3?crid=199C1U5L2PLCX&keywords=Nexstand+Laptop+Stand&qid=1672296069&sprefix=nexstand+laptop+stand%2Caps%2C107&sr=8-3

A smaller option is the Roost or Nextstand: https://www.amazon.com/Nexstand-Laptop-Stand-Portable-MacBook/dp/B01HHYQBB8

Definitely grab a separate keyboard like /u/tidemp said though.

If you're staying anywhere for 2-3 months and it has an awful chair, it's usually worth snagging a cheap office chair for $30-50.