hello, My wife and I have twice been away in a hotel with our daughters and us in the same room, the last time was a month ago. not to your hotel, but another in C'an Picafort (the Haiti)
All went well, but my daughters sleep well anyway. Once the novelty had worn off for them of all being together (about the 3rd night) they soon settled into the routine of going to bed.
While they were going to sleep, my wife and I sat out on the balcony and read magazines/books so as not to disturb them, but when they were asleep all was well, even the eldest getting back into bed after a wee-wee trip (she is six) and going straight back to sleep.
You might be able to upgrade to an interconnecting room at your hotel
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I am sure I saw them on Thomson TV when the shoewd it on there