Simplify the following text for a Grade 2 native English-speaking person.
Original: The Avas is a hill ( 234 m \/ 780 ft high ) . There is a TV tower , an old church ( the oldest building in Miskolc ) and a large housing estate ( high houses with lots of flats ) on Avas .
Simplified: The Avas is a hill ( 234 m ) in the heart of Miskolc .