It might be a moot point because it's not violent or aggressive from what I've seen.I've been ardently searching for relevant case law or news of enforcement (fines, etc), but so far no luck! 

I have been using the BIS site, and as Llewelyn mentioned, the Dept of Finance tax code is 2 family, but no CofO from DOB to support. 

There are other sites and also insurance housing companies that focus on longer furnished stays (for instance, furnished finder), but having done both MTR and STR I much prefer STR.

Those sites have the best marketing photos, but that's not where the potential costs are.

There's a ton of posts on this site mentioning the use of LLC's.

This has been discussed alot on here.Some people seem fine with no cable.I have nice vacation rentals and provide an easy way to watch live sports, news etc.I provide cable channels or you tube TV.In my listings I state up front that I provide cable channels because I'm not cheap that if other people won't provide this what else are they cutting corners on?

All I am asking is a reference to a bank that has a good web site that will allow me to do all my online transactions and be easy to work with.

I've had issues with their system not notifying me when a tenant has a maintenance issue and there are times the site is requires me to clear my cookies before I can see anything in there.

There are budget-friendly self-management sites that make setting up applications and collecting rent simple and again, you can pocket that 12%.

You can check their insurance coverage, any active lawsuits they have, their workers comp rate (how safe they are on the job site), and other metrics.