In my introduction I mentioned how I really value privacy, space and I don't like cities.

It depends on the privacy level you’re looking for.

However, I am wondering if we should put a solid door there for tenant privacy/security or would it be appropriate to use the french style doors, put locks on them & just blackout or frost the windows so tenant B cannot see into tenant A's apartment when entering the common foyer through the front door?    

However, I am wondering if we should put a solid door there for tenant privacy/security or would it be appropriate to use the french style doors, put locks on them & just blackout or frost the windows so tenant B cannot see into tenant A's apartment when entering the common foyer through the front door?

We're in Massachusetts and there's a 2 way privacy law which forbids cameras if the other party doesn't consent.

I also am going to have to purchase 1,000 sq/ft of new flooring.I've been pretty accommodating through the whole process and now she's getting quotes to remove a wood privacy fence that is about 100ft long.

They need to deal with fair housing and privacy.  

Others preferred whole units for safety and privacy reasons.Hope this helps. 

@migdalia colon You have an extra challenge in SC because the state recently passed a privacy law prohibiting the use of public data for marketing - this includes solicitations to buy property.

I upgraded all flooring, painted, added new light fixtures, added 6' privacy fence, and a new deck.