'Upper' in the Bible

The weight of the nails was fifty shekels of gold. He also overlaid the upper rooms with gold.

He also built upper Beth-horon and lower Beth-horon, fortified cities with walls, gates, and bars [to lock the gates];

He took the captains of hundreds, the nobles, the rulers of the people, and all the people of the land, and brought the king down from the house of the Lord; and they came through the upper gate to the king’s house (palace) and set the king on the throne of the kingdom.

He built the upper gate of the house of the Lord, and did extensive building on the wall of Ophel.

This same Hezekiah also stopped up the upper outlet of the waters of Gihon and channeled them down to the west side of the City of David. Hezekiah succeeded in everything that he did.