I would think of your options Marlise would be the most phonetically accurate, but I'm also thinking that Marliese (similar to Anneliese) might work better.
It's a very pretty name, and I'm more than slightly jealous that you and your husband agree on such a great name! :)
Best of luck!
One more vote for Marlise. What a lovely name!
I would say Marlise as Mar-lease, the others I would say as Mar-lis. You could also spell it Marlese and avoid the posibility of the Mar-lice pronounciation. I think a one syllable middle name would sound best with this name. Something simple like Bay, Rose or Ann (even though these are a little generic, I still like them)
I'm also voting for Marlise. :-)
I really like Marlise!
Thanks for your suggestions! I think we will go with the spelling Marlise...
Now we just have to figure out a middle name!