The house is nice and simple, light and airy, and has a pretty little garden with lemon trees. The hosts are wonderful people, we and our dog felt welcomed right away. One tip for those of you who plan on cooking: I didn't find any salt and pepper, and I struggled a little to cut a watermelon with the available knives. But that's no big deal, overall experience at the house was great.
Serifos Island has some really beautiful beaches, but to get to some of them you have to walk on steep ground, so wearing athletic shoes would make it easier.
Thank you Evanthia, I would definitely visit again!