They have a super nice terrace with bonfires, excellent fast food, draft beer and a great service. There's Happy Hour from Thursday to Sunday 5–7 pm, and special sales during the week that you can look up on Facebook page: Eastern Pub.
It is the perfect place if you want to just talk with a group of friends, with a really good playlist on the background and reasonable prices. You'll get meal for two including 2 hamburgers and 4 beers for 30$.
They have Sangria Tuesdays (2=1) and Hamburger Thursdays (2=1). PS! In Costa Rica you are not expected to tip, it's included it the prices.