This is the 243rd most frequent Finnish word.
keskellä
"In the middle of" or "at the center of."
Here, 'keskellä' means 'in the middle' and is used to describe the spatial positioning of the table within the room.
Puinen pöytä on keskellä huonetta.
The wooden table is in the middle of the room.
'Keskellä' is used to indicate being surrounded by or in the midst of something, in this case, a quiet forest.
Hän istui keskellä hiljaista metsää.
She sat in the middle of the quiet forest.
In this context, 'keskellä' refers to a specific time within a period, specifying 'in the middle of summer'.