1. Re: steep staircase between 1st and 2nd floors. We didn't find it to be a problem and we had a preschooler with us. It helps that there are handrails and it's a spiral staircase bounded by walls (feels less likely you'll fall off the staircase).
2. A few have mentioned that nearby Seabright Beach can be dirty. Bonfires add some wood detritus to the sand right where you enter the beach from the sidewalk. But once you're past that, the beach is beautiful.
Plus:
LOCATION. 20 steps from the beach, and Seabright is much less crowded because it doesn't have much dedicated parking (luckily you have a dedicated parking spot at the house). 12m walk to Beach Boardwalk, <5m to the best burgers we've ever had at Betty Burgers.
CHARM. House FULL of light because of so many windows on first floor. Back deck is spacious and you can see the ocean (pro-tip: hose on deck you can use to wash off sand!). Hear ocean waves from every window on second floor.
HOST. Sabina super easy to work with and while setting rules, relaxed overall vibe. Quick to respond to any questions.