This rental clearly caters to families, with plenty of toys, activities, rounded tables, and very little in the way of glass furniture/ornaments. There was a pack-n-Play in the unit, it had a mattress and linens, and the three tiered bunk bed with trundle is an awesome touch for the kids' room. King sized bed in the master was perfectly comfortable with a mattress topper, and the windows were armed with some serious floor to ceiling blackout shades - just got to make sure you overlap them where they part and you'll sleep through the most intense sunrises if your kid kept you up all night, lol (yes, we tested this).
The kitchen is small, but surprisingly functional - they have lots of different pots and pans, utensils, both in porcelain and plastic for the kids. Reminds me of an RV we owned for size reference, we set a one person in the kitchen at a time rule. Check out the fridge size before you do your grocery run, buy half gallon sizes or less to maximize. No ice maker, you're going to want a couple of coolers if that's important to you.
It got below freezing for us, but they supplied a space heater and it was the perfect thing. The host is incredibly responsive.
Things I wish I had brought:
Sound machine for kids' room.
Something soft for the floor for the infant.
Swiffer to clean the floor constantly (sand! There is a broom, I'd just prefer it).
This was an extremely pleasant and peaceful visit to Galveston, we really enjoyed the unit and would recommend it.