Hi Lynn. I liked it!
Your opening paragraph hooked me in right away. Your writing is excellent so it drew me along the backstory, but I have to agree with Rick in that soon after your opening paragraph, I got confused. Especially when you switched to the dead girl's POV. I read all the way to the end and would keep reading. I really enjoyed it.
I do have a suggestion, but take what I say with a grain of salt because I don't have nearly as much experience as you! I'd cut out all the back story and try to find a way to weave it in later. After your opening para, I'd jump straight to the present like this:
Neil had seen ghosts all his life, but he’d never lived with one in his bathtub before. That would teach him not to rent property without viewing it first. Neil stumbled along the hall towards kitchen and kettle, passing the bathroom, the dead girl’s kingfisher light.
I hope this helps, Julie😘