Wow! That's a tall order! Ocean City does have some yearly rentals but not a lot. The reason is this, it is just far more advantageous to the landlord to rent at the higher weekly rental rates of the summer and then a reduced rate in the winter. This also offers him/her the flexibility to save a week or two for themselves. A four bedroom as you have described would be a real money maker!
Have you considered at that monthly rent and with today's mortgage rates so low that you could buy a place?
I'd be happy to help you find just what you're looking for!
Joanne Bernardini, SFR,CSSA
Coldwell Banker Casa Bella Realtors
609 947 2451