Digital nomads oftentimes experience difficulty in finding housing. This is particularly true for those wanting to stay somewhere for a few months or are unsure how long they want to be in an area. It generally does not make financial sense to rent an Airbnb for that long, and securing a traditional apartment rental agreement usually necessitates a year-long or similar commitment.
As a result, securing a space in a co-living situation meets that sweet spot in the middle: cheaper than most Airbnb rentals but with more flexibility than an apartment arrangement.
Another benefit for many is that co-living options provide convenient ways for digital nomads to meet others, which is generally not as easily done when renting an Airbnb or apartment.

In most cases, co-living housing refers to a situation in which the digital nomad rents a room and shares common areas, such as a place to cook. A bathroom may be individual or shared. Also, some situations allow for more money to be saved by sharing a room, similar to a dorm setup at a university.
One perk offered by many of these types of places that entice like-minded people are different themes. For example, a co-living arrangement may focus on attracting people who want to eat plant-based diets and explore the outdoors, which is great for those who want that type of environment.
Also note that co-living spaces sometimes offer co-working spaces as well, providing you with access to working and meeting places within the same area.