It's not free beer and free coffee, it's X% of $2,200 a month beer and Y% of $2,200 a month coffee.
Also $2200 is on the high end for four people. You can probably talk them down to $2k or less.
You'd be surprised how valuable it is to have a pot of coffee ready to go all the time, next to a mini fridge that's always stocked with half and half. Sweetner's on the counter. It ends up taking like 30 seconds to grab coffee.
The janitors are surprisingly cool people, and they're fastidious about making sure the trash is taken out, doing the dishes (yes, you get a kitchen + fridge!), and making sure everything is stocked.
It's so effective to pool resources like that. Everyone gets those benefits just by being in the same place. And it's remarkable how un-cramped it all feels. Your office even has beautiful floor to ceiling windows that gives you a nice view of downtown and sunsets.
s/Your office/some offices
My company currently has an office in the middle of the floor of a WeWork building, it's cramped for 4 people, and the only "views" I have are of the walls of neighboring buildings in the windows that I can see through ~4 other offices and are ~80-100ft away (but, times are a bit tough right now and I think we're getting a pretty good deal for an NYC WeWork office).
In general though, WeWork is pretty solid; their coffee is acceptable, and the beer is usually pretty good.
Try this stuff: http://www.nestle.co.uk/brands/coffee/superpremium/azera
Just mix with hot water, it's surprisingly good.