First Pages: MG / Stone's Nest

The problem with a castle carved from a stone monolith was that the plumbing was notoriously unreliable. All he wanted was a hot bath. Was that too much to ask? But the spigots sputtered at him, spitting cold water on his hands, and then vomiting huge quantities of the icy stuff into the sunken bath. Also carved from stone.

Interesting... but "vomiting"? Is that the right word?

Stefan had gone to school in the north, where it was cold and castles were built from timber and there was movable furniture. He’d had the hardest time explaining how…organic his home was. The furniture was part of the room, carved into the dark black stone the way the stairs and toilets and beds and bathtubs were.
His grandmother had spent her lifetime making the stone castle less dreary. Every wall hung with colored fabrics, raw satins dyed the colors of rich jewels,

Rich jewels? As compared to the colors of cheap jewels?

or soft, cool cottons tie-dyed in whimsical patterns. While the bed and bedposts were carved from rock, they’d been intricately designed with mythological creatures and personified virtues. (Ten years later when gryphons were discovered to have returned to the land, a hasty amendment was made in the architectural books about the idealization of gryphons in early decoration. “Hmph,” Zac had said. “As if they could apologize for making my beak look that big.” Zac was slightly vain about his beak.)

You had me up until the gryphon speaks. Feels out of place here.

Magic-handlers had figured out a way to make decent mattresses from sea foam – for a rather exorbitant price. The castle boasted no fewer than 500 of the mattresses within its walls.
“But food?” Stefan’s friends had asked. “Do you cook? Or is everything roasted over an open spit?” They’d laughed as though he were the butt of a joke, but he didn’t get it. He’d explained about the great bread ovens, warmed underneath by a fire that never needed to be put out. Breads, cakes, muffins, all cooked as well as any roast.
“Although we don’t eat much meat,” he went on. “Serafina made the decree when she was first made queen.”
Of course, Sera had been made queen when she was three, and her vegetarian declaration was made when, at age five, her favorite chicken found its way into the dumplings. By the time the advisors could figure out what to do, Sera had outlawed the killing and eating of chickens, rabbits, pigs and cows. It was Stefan who had convinced her to allow the eating of deer and fish, and he’d always thought he had an easier time of it because Sera had never been let out of the castle long enough to meet a deer.

I'm definitely curious enough to continue. Could be a promising fantasy.