An "open fireplace" refers to a type of indoor heating system where a fire burns in a designated space, usually made of bricks or stone, and is not covered or enclosed by any glass or metal barriers. Full definition
20 luxury suites in individual cottages with open fireplaces in the bedroom and living room and large private viewing terraces with sofa and dining area. (somak.com)
The master bedroom has a dual access ensuite / bathroom and original feature open fireplace. (alluxia.com)
There is a large open fireplace and a full sized bath with shower in the bathroom and flush toilet. (wikiaustralia.com)