I have worked with plaster for over 20 years. I can tell you that the crack is getting worse because most probably you have a calcimine ceiling. You have had a leak in that area and even if it were dry, once calcimine gets wets, it is over! Double check the roof and attic to make sure there...
I can say by experience that the cracks in your ceiling are old or have had moisture issues before. For drywall to get the way it looks takes a long time.
Everyone has the same thing with granite. It is normal. But usually with good granite companies, they never leave fiberglass tape on the bottom of the granite. Try to peal it off.
You can get a few more years by putting mastic or what seems to be vct glue on the floor. Then when you have the funds or the time, go ahead and it it right.
The proper way of doing a utility floor from the get go is to put in a floor drain. Thee floor drain is extra water prevention. The floor drain can go in the basement and drain in a sink, depending on your local codes or state codes. Usually they do not want it to drain into a sewer. If...