I wanted to add a suggestion to all that are in a in-house separation only because they don't have somewhere else to go. I was stuck in that situation, and I "thought" I didn't have any choices other than a hotel or parents house unless I signed a lease.
I've since used craigslist to sublet a lease (I moved out of state only a few months into renting a apartment), and it was a very easy process. I noticed that a lot of people on there were looking for someone to sublet their lease for only a month or two. This would be a very effective way of finding somewhere else for a short period of time, and I think would have helped me immensely. You can take some furniture from your current place or pick up some cheap from craigslist while you're on there. The goal of a short term lease wouldn't generally be to end it all and move on permanently, but a place for you to get some space to get your head right, then reassess the situation and what would be best for you and your R.
M - 9 1/2 years 5/5/16 - Bomb drop - 3 week EA 10/31/16 - We sold house 01/10/18 - D Finalized