Milan · Amsterdam · European Projects

Where form
meets function

We design spaces that age well — drawing on Italian material traditions and contemporary restraint to create interiors with genuine character.

View Projects Our Approach
Sorello — interior detail, Villa Toscana project
What we do

Full-scope
design practice

Residential

Private homes and apartments across Italy, the Netherlands, and Germany. We work closely with clients from concept to handover.

Hospitality

Boutique hotels, restaurants, and wine bars. We've worked on projects in Florence, Bruges, and Porto since 2020.

Material Sourcing

Direct relationships with stonecutters in Carrara, fabric mills in Prato, and ceramic workshops outside Caltagirone.

Consultancy

For developers and other studios. We advise on material specification, space planning, and Italian craft procurement.

Selected work

Recent projects

All projects
Sorello studio — material sample wall, Milan office
About the studio

Italian material intelligence, European project delivery

Sorello was founded in 2019 by Marta Ferretti and Johan Kruse after a decade working in large architecture practices in Milan and Amsterdam. The name comes from a small hill town in Umbria where Marta's family has a stone farmhouse — it stuck.

We keep the studio deliberately small. At any given time we carry four to six active commissions, and we visit every supplier ourselves. There are faster ways to run a practice, but not better ones.

38 Projects completed
7 Countries
12 Artisan partners
Read our story
Studio journal

Writing & notes

All posts
Marble sourcing in Carrara — Sorello journal
Material Notes · February 2026

What it actually takes to source marble from Carrara

Three days in the quarries above Massa Carrara with a blocksaw and a stone consultant who has been doing this since 1987. Notes on vein matching, minimum block orders, and why the "Calacatta" on most specification sheets is not what you think it is.

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Biophilic design in European interiors — Sorello journal
Design Practice · November 2025

Biophilic design beyond the fiddle-leaf fig

How we integrate natural materials, light cycles, and acoustic texture into our projects without defaulting to the usual clichés. Including a discussion of the Como Residence, where the client initially wanted twelve houseplants in every room.

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Color palette 2026 for interior design — Sorello
Colour · September 2025

Colour in 2026: a practical view from the studio

We don't usually do colour trend posts, but after three client conversations in the same week about "warm minimalism" we decided to write down what we actually think. Spoiler: warm minimalism is not new, and most of what's being called trend is just good sense catching up.

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Starting a new project?

We take on two to three new commissions per year. If the timing is right, we'd like to hear about yours.

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