You should have a minimum of 18" between countertop and the bottom of the upper cabinets to allow for appliances as well as enough clearance for food prep. Base cabinets will end up with a height around 36"ht with the countertop. Bar height is usually around 42". Upper cabinets can be 30" in height or taller depending on your ceiling height and whether or not you are taking them up to a ceiling or soffit. Make sure to adjust for crown moulding on the cabinets or wall.

1. Naive quesion.. why do bar counters have tap? is it for beer or some other purpose.. thanks for helping me figure this out 2. whats an ideal height of bar counter

A houzz contributor, not too long ago, had made a wine rack out of 4'x4' wooden pallets, that are used in the US to move a load of goods with a fork-lift truck. Perhaps they have them in your country. He cut them in half so they were only two feet deep and stacked them up to high counter height. The wood would be a nice contrast with your concrete, might add a little warmth to the space. cascio.offsite@gmail.com

Tv in a kitchen will do only if there is a siting arrangement done in the kitchen like dining or may be open bar counter connected with living room and kitchen then it can be good option for use of it.