The following budget hotels are walking distance from the Valia hotel.
V Check inn Sukhumvit 22 | Bangkok- Open Website
US$ 20-25
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Sleepbox Sukhumvit 22 -Open Website
US$ 25-30
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The Davis Bangkok OPEN WEBSITE
US$35-45
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Admiral Suites Bangkok OPEN WEBSITE
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*The hotel rates may change closer to the conference dates. There are many more hotels and budget hotels around Valia Hotel Bangkok.
You may use Booking.com, Expedia.com or any other travel site for search accommodation US$10 upwards