Six people have been displaced after a fire at the Rainier Hotel in downtown Vancouver.

The single-room occupancy (SRO) unit on Carrall Street was evacuated around 12:30 a.m. Wednesday, after some materials caught fire in a room on the third floor.

The occupant of the room managed to escape without injury before fire crews arrived on scene.

"There's a fair bit of fire damage to that one room," said Battalion Chief Terry Nikolai, with Vancouver Fire Rescue Services.

BATTALION CHIEF TERRY NIKOLAI VANCOUVER FIRE RESCUE SERVICES

Battalion Chief Terry Nikolai says the occupant of the room where the fire started escaped unharmed. (Gian-Paolo Mendoza/CBC)

Some other rooms also sustained water damage from the sprinkler system and firefighting efforts.

"Thankfully the sprinkler activated and contained the fire, until our crews managed to get in there with a line and extinguish it," said Nikolai.

The cause of the fire is under investigation.