Sentence:  “The shower is <WSD>walk in</WSD>, multiple showerheads and a tiled bench. Take your time, I  installed one of those perpetual hot water heaters, so you can have an endless experience. If you&#39;re not out in an hour, I&#39;ll call 911.” 
Meaning of the word marked with <WSD> tags:  Designed to be possible to walk into (without stepping over a ledge, etc).