I hope I'm not spamming when posting this, but this is exactly what we're trying to solve at Out Of Office with "Work Clubs" [0]

We've spoken with thousands of remote workers in the last 2 years and the one recurring theme we kept hearing about was loneliness. We're testing out this Work Club concept as a way for remote workers to get together and work together throughout the day. It's a low-friction way to meet people during your work day, while still getting your work done.

We've seen a lot of positive initial feedback and want to continue trying it out in new cities.

[0] https://outofoffice.app/workclub/