what are rainsfords first impression of the island and the house he finds

Rainsford is relieved to get to the island. He falls asleep as soon as he swims to shore. When he wakes up he sees a thick jungle setting,

He saw no sign of a trail through the closely knit web of weeds and trees; it was easier to go along the shore, and Rainsford floundered along by the water. Not far from where he landed, he stopped.

He follows a path and eventually finds a large gothic-like mansion.

"Mirage," thought Rainsford. But it was no mirage, he found, when he opened the tall spiked iron gate. The stone steps were real enough; the massive door with a leering gargoyle for a knocker was real enough; yet above it all hung an air of unreality.