private rooms in hostels arent a great deal, usually (a room in an airbnb is often better value), but can be a solution.
Coliving places also could be another one. But there are colivings that are basically airbnbs, and coliving that are basically upscale hostels. If you want some social interaction, you might be better served by the latter.
Also, coworking&coliving sometimes have private spaces you can use for your calls. Hard to determine what could work for you without having more information, though.
Also, consider booking a coworking place for a week or so and be there as much as you can... the goal being meeting a few ppl and making connections, then use them as an entry point into the DN/expat social scene.
Also, if you might be looking for short term partners, that's another solution :P