Suggest best name for a small cafe located in commercial building to cater corporate customers

From the options you have mentioned, Eateria seems good from the rest. I guess you should look for other names too. My suggestion 'The Busy Beans' (just an example) such names would sound good for a cafe serving corporate customers.

Delhi'z Cafe'

D-Coffee Shop!!!

Bitez & Bitz Cafe'

Milk'n Silk Cafe'

Wake! Up! Coffe Shop...!

The Black Hub Coffe House...!

Hang-Out Cafe'

Hug-Mugg Cafe'

I think it should be like

"Cafe GoodDay"

"Refreshing Cafe"

"Cute Cups"

"Hot Coffee Day"