にはほとんど人がいなかった

there were hardly any people in

→ に
phrase Rare #34,840
there were hardly any people in Used to say that a place had almost no people in it. The place is marked by には, and ほとんど〜ない means “hardly any” or “almost no.”
JA: 駅にはほとんど人がいなかった。
EN: There were hardly any people at the station.

雨が降ったので海辺にはほとんど人がいなかった

Because it had rained, there were hardly any people at the beach.

気持ちのよい天気だった公園にはほとんど人がいなかった

The weather was lovely, but there were hardly any people in the park.

公園にはほとんど人がいなかった

There were hardly any people in the park.

海岸にはほとんど人がいなかった

There were hardly any people on the beach.

部屋にはほとんど人がいなかった

There were hardly any people in the room.