Nice site. Esspresso is a pretty established niche...but a niche without competition is not worth it
You should remove the "Advertise on this site" from the Adsense. You will see a huge jump in clicks. Here is how to do it:
-Log in to your AdSense account.
-Under the My Account tab, visit the Account Settings page.
-Scroll down to the Onsite Advertiser Sign-up section and click 'edit.'
-Uncheck the box marked 'Include me in Onsite Advertiser Sign-up' and click Save changes