Any recommendations for an affordable hot desk coworking space?

The cheapest hot desk I found in Singapore is at Lionsworld Business Centre. It's $75/month for unlimited usage. It's in Peninsula Plaza, next to City Hall MRT. It's not as elegantly furnished as, say, WeWork, but at only $75 it'll get the job done very cheaply. The next closest competitors are Workcentral ($200/month) at Dhoby Ghaut (5 mins walk from MRT), and The Work Shop ($220/month) at Ang Mo Kio (8 bus stops from AMK MRT).

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You can view this full comparison guide on cheap hot desks in Singapore. The coworking spaces listed in the guide have hot desks from $75 to $300/month, with several of them in the CBD.