What is more valuable: 1/2 Bath or Laundry Room?

[Christian Bunte]

What is more valuable for a 3br rental property: 1.5 baths and shared laundry OR 1 bath and private laundry room?

What is more valuable for a 2br rental property: 1.5 baths and shared laundry OR 1 bath and private laundry room?

Recently acquired a 2-story duplex (3br/1.5ba) and planning out the remodel. Currently the property has NO washers/dryers. There are two feasible options for adding a laundry room: 

A.) Place a shared washer and dryer in the detached garage. 

B.) Make the 1/2 baths into 2 private laundry rooms. 

I included 2br because we may end up making the downstairs openfloor plan by removing a bedroom. 

I feel that a private laundry room makes life much easier, but most people I have talked to say the 1/2 bath is more valuable to renters. What option will give me the highest rent?