Click the link to learn more about noise complaints: http://www.seattle.gov/spd/prevention/Neighborhood/noise.htm
Click the link to learn more about stalking & domestic violence complaints: http://www.seattle.gov/police/units/investigations/domestic_
Good luck with resolving your issues.
Property management is not apparent through NWMLS. I want to agree with Ken, any safety related issues like stalking need to be reported to the police.
The current owners of the complex appear to be Sola On Harvard LLC. I hope you are able to resolve your issues and stay safe.