Work abroad in HELENA's family for 9-9 Months starting from Mar 2023 as an Au Pair to take care of 2 children of 1 - 5 years old in PALMA, Balearic Islands Spain

We are Julien and Helena. We have two fantastic daughters aged 4 and 2 who speak/understand Catalan, Spanish and French; and a 3-year-old big dog (a Mallorcan shepherd, or "Ca de Bestià" as it is called here).
Julien has to leave for a few months for work, and I'm still working, so we've decided to contact an Au Pair during this time in order to reconcile work and family life.
We live on a spectacular island, Majorca, and our semi-detached house with two floors, with a patio (not a pool), is located in the city of Palma. Right in front of the house we have public transport (bus right in front and the train a few meters away). At home we have three rooms (one of them with a balcony, and it will be for the person who finally comes); a bathroom (which we would all share) and a toilet with utility room; In addition to the kitchen, the living-dining room, an office/play area, and a storage room.
Our idea is to be able to count on someone as soon as possible. What do you think, we know each other?