What can I do about high pressure water noise?
Your water pressure is very high - nearly double the average pressure.

The solution is very simple - install a pressure-reducing valve in the water main just after the meter and main shutoff valve. The valves are in the $100-$200 range from any commercial plumbing supplier (Home Depot probably doesn't have them).

However, this involves modifying the house utilities and is therefore definitely in the owner's domain. Both you and the neighbor will likely have to approach him together, unless you can do the job yourself without anyone noticing.