I would suggest what another person has and reach out to a realtor or a you can find some in the area that specifically work with rentals.

I will say good luck with the sea coast area. Rent has gone up dramatically in a lot of places and the sea coast is one of those. Out of all of the places I’ve lived across the US, I find NH to have been one of the more difficult places to find a rental in general. Either it’s way out of your range, in the middle of nowhere and run down, or there is a long waiting list to get an apartment, and by the time you do rent has gone up several hundred dollars or more.

But don’t let that deter you. I’ve gotten extremely lucky in the past finding an affordable and decent sized apartment. All the luck to you!