About
I design children's rooms around the child who lives in them.
I'm Ariana Hernandez, an architect, a licensed interior designer in Puerto Rico, and a mother. I help you see your home the way your child does, and shape it into a place that works for both of you.
- Master's in Architecture
- Bachelor's in Environmental Design
- Licensed Interior Designer, Puerto Rico
- 18 years in architecture and interiors
- 11,000+ on Instagram
My story
He couldn't tell me. So he showed me.
I have always felt rooms before I could explain them. The way light falls across a floor. Whether sound settles or bounces. Whether a room lets you breathe. As a little girl I had no words for it. I only knew that some rooms calmed me, and some made me want to leave.
Nine years of study gave me the words. Environmental design taught me why a space changes how we feel. Architecture taught me how to shape it on purpose. Interior design taught me to work at the scale of a single room. Then came eighteen years of work on spaces of every kind: homes designed from the ground up, commercial spaces, public projects. Every person I designed for could tell me what they needed.
Then I became a mother, and for the first time, my client couldn't tell me anything.
He showed me instead. Where he played, and what he walked past. Where he settled. Where he went when the day was too much.
So I watched him the way I used to listen to clients, and slowly I understood. I had spent my whole career reading rooms from my own height. He was reading them from thirty inches off the floor.
Now every room I design starts with one question: what does it feel like from down there?
How I see it
A child reads a room before anyone explains it to them.
Picture walking into a cathedral. Ceilings far above you. Every surface built for someone bigger. Now picture being your child, in a room designed for adults.
Their body decides how a space feels long before they can tell you. A chair that leaves their feet dangling says this isn't made for you. A shelf just out of reach says ask a grown-up. A wall of open bins at eye level says too much to choose from. So they wait. They cling. They ask for help with things they could do alone.
Parents are usually handed explanations about the child: too busy, too sensitive, not independent enough. Very few are told how much the room itself may be shaping that behavior. Young children are still learning to filter what they see and hear, so a busy room affects them more than it affects us. That's good news, because the room is something you can start changing today.
Read the room before you correct the child.
The method · OTFC
Four questions every child asks a room.
Everything I look for in a child's space comes down to four questions. I call them OTFC. Your child asks them every time they walk into a room, without a single word. I built them on research from environmental psychology and neuroarchitecture, then brought that research down to a child's height.
Own
Is this mine?
Scale, territory, and the freedom to use a space without help.
Tune
Is it too much, or too little?
Sight, sound, touch and smell, calibrated rather than removed.
Flow
Can I move through it?
Paths, clearance, and the anchors that hold a zone in place.
Call
Does it invite me to play?
Presence, atmosphere, and the quiet that lets one chosen thing stand out.
A room that answers all four doesn't need rules taped to the wall. It does the quiet work for you, and your child settles into it.
Tested in a real home
Everything I share is lived in first.
Our home is where every idea gets tested, and my son is the most honest client I have ever had. He doesn't pretend to like a corner. He uses it, or he walks past it.
These spaces get played in hard and reset every week. If an idea doesn't survive a real Tuesday afternoon, it doesn't go in a guide.
Where to start
Start with fifteen minutes.
The Calm Room Reset is the first step I give every parent: one room, three moves, nothing to buy.
Get the free Calm Room Reset →Or see the corner guide · browse Field Notes
Based in San Juan, Puerto Rico. I work in English and Spanish with parents anywhere in the world. A room is a room, and the principles travel.