o lofos
o lofos
about us
Block722 is an Athens-based architecture studio, founded in 2009 by architect Sotiris Tsergas and interior designer Katja Margaritoglou.
The team combines Greek and Scandinavian heritage, as well as interdisciplinary experience, and creates work that feels confident, natural, and timeless. The studio undertakes a variety of work, from residential to commercial and hospitality, managing in-house all stages of architectural development, from concept design, through to construction and delivery.
Solutions always incorporate a focus on quality materials, a crafts-based approach and collaborations with local artisans and artists that interpret the Mediterranean spirit and traditions for the 21st century.
An architectural ethos that places a sense of balance at its heart is among this boutique, yet dynamic practice’s guiding principles. At the same time, Block722’s design solutions are strongly led by each project’s contextual needs and the client’s brief.
As a result, the studio has won several high-profile awards and has been featured widely in Greek and international media.
Sotiris Tsergas | Architect Engineer, Managing Director & CO Founder
Katja Margaritoglou | Executive Creative Director & CO Founder
recognition
LIV Awards, Living space/Resort – Luxury, Winner *Gundari
Grail Awards 2025, Winner *Gundari
AHEAD Awards 2024, shortlisted *Gundari
100% Hotel Design Awards, Best Resort, Winner *Gundari
IADA 2024, International Architecture & Design Awards, Architecture &Design Community, Personalized Home Creation, Platinum Winner *Viglostasi
IDA, International Design Awards, Residential Interior Design / Houses - Single/Family Dwelling, Gold winner Interior design award *O Lofos
Architecture MasterPrize 2023, Residential project, winner *O Lofos
Muse Hotel Awards, Resort - World-Class Adult Beach Resort, winners 2023 *Casa Cook Samos
World Luxury Awards, Luxury beachfront hotel & Luxury seaside hotel, Continent winner: Europe, winner* Meraviglia Slow Living
World Architecture Awards 43rd cycle winners 2023, Architecture/Realized category, winner * O Lofos
The Plan Award 2023, shortlisted *O Lofos
DOMA Greek Architecture Awards, Best Work, shortlisted *O Lofos
Archdaily Awards 2023, Building of the Year, nominee * O Lofos
ΑHEAD Awards 2022, shortlisted *Casa Cook Samos
World Luxury Hotel Awards 2022, Best Luxury Concept Hotel, winner *Meraviglia Slow Living
Ηotel Design Awards 2022, 196+ Forum, winner *Casa Cook Samos
Greek Hotel of the Year 2022, Gold hideaway hotel & Gold all suite hotel, winner *Meraviglia Slow Living
Architizer A+Firm Awards 2021, Best architecture and design firms Europe, special mention *Block722 studio HQ
Big See Interior Design award 2021, Interior workplace, winner *Block722 studio HQ
Big See Interior Design award 2019, winner *Olea All Suite Hotel
Ahead Awards Europe 2019, Resort category, shortlisted *Olea All Suite Hotel
Design Awards 2018, finalist *Olea All Suite Hotel
Interior Design 6th Annual Best of Year Awards NY 2018, Best large resort, winner *Olea All Suite Hotel
100% Hotel Awards 2018, Best resort, best reception, best restaurant, best room, winner *Olea All Suite Hotel
Architects’ Directory honors the late, great Zaha Hadid, July 2016 Issue of Wallpaper* (W*208) *Sotiris Tsergas, Block722
the team
Vasiliki Moustafatzi | Design Director - Senior Architect Engineer
Michael Gryllakis | Construction Manager - Senior Civil Engineer
Steef Teeuwen | Operations Director
Natalie Dillon | Project and Operations Director - Senior Architect Engineer
Efi Spyrou | Art Advisor & Curator
Nikos Vlachos | Finance and Operations Director
Maria Bekakou | Financial & Legal Assistant
Alexandra Zacharopoulou | Marketing & Communication Manager
Patricia Fakiolaki | Design Lead - Senior Architect Engineer
Georgia Nikolopoulou | Interior Design Lead - Senior Architect Engineer
Marilena Michalopoulou | Project Architect - Architect Engineer
Ersi Mantziara| Design Lead - Senior Architect Engineer
Danai Lazaridi | Senior Interior Architect
Katerina Mavromoustaki | Interior Designer - Architect Engineer
Galanos Katomeris | Project Architect - Senior Architect Engineer
Athina Papachristou | Project Architect - Architect Engineer
Eirini Tsakalaki | Senior Architect Engineer
eirinit@block722.com
Ioanna Petroulaki | Project Architect - Architect Engineer
Dimitris Aidonis | Senior Architect Engineer
daidonis@block722.com
Anastasia Dalma | Legislation & Building Permit Consultant - Senior Architect Engineer
adalma@block722.com
Foteini Chapsa | Project Architect - Senior Architect Engineer
fchapsa@block722.com
Eleni Boni | Senior Architect Egnineer
Nikos Antonoulis | Architect - Civil Egineer
Dimitra Stergiou | Project Architect - Architect Egnineer
Nikos Klironomos | Architect Engineer
Elina Varouxaki | Architect Engineer
Anna Papageorgiou | Interior Architect
Theodora Sakellariadi | Project Architect - Senior Architect Engineer
Iro Dermitzaki | Project Architect - Architect Engineer
Chara Styliou | Interior Architect
Ioanna Karakosta | Accounting Assistant
Francesca Balfoussia | Design Director Senior Architect Engineer
Christina Kontou | Project and Operations Director - Design Lead - Senior Architect Engineer
Nileta Kotsikou |Project Manager - Senior Architect Engineer
Nikol Chatzigianni | Studio Manager
Natasa Gounari | Human Resources Coordinator
Christina Dimitropoulou | Executive Secretary
Eleni Tsakalou | Accounting Assistant
Elena Milidaki | Design Lead - Senior Architect Engineer
Apostolos Karastamatis | Senior Architect Engineer
Agni Stasinopoulou | Project Architect - Architect Engineer
Yannis Mantzaris | Creative Product Design - Director Product Designer
Xenia Bouranta | Interior Architect - Architect Engineer
xbouranta@block722.com
Dimitris Papageorgiou | Design Lead - Brand Development Direction - Senior Architect Egnineer
Electra Polyzou | Architect Engineer
electra@block722.com
Kostis Vatanidis | Architect Engineer
kvatanidis@block722.com
Despoina Kolovou | Project Architect - Architect Engineer
dkolovou@block722.com
Iasonas Diavatis | IT Support
idiavatis@block722.com
Nansy Nikolopoulou | Senior Architect Engineer
Afroditi Karaiskou | Project Manager - Senior Architect Engineer
Giorgos Tsilomelekis | Architect Engineer
Tzemil Moustafoglou | Architect Engineer
tmoustafoglou@block722.com
Vasilina Tzouma | Interior Architect
Konstantina Chronopoulou | Junior Architect
Maria Xatzikallia | Junior Architect Engineer
Anita Peslis | Junior Architect Engineer
Panagiotis Konstantopoulos | Civil Engineer
pkonstantopoulos@block722.com
Dimitris Sklavounos | Interior Designer - Architect Engineer
Afroditi Dosopoulou | Project Architect - Architect Engineer
Anna Passarea | Front Desk Receptionist
Elena Calapis Housekeeping
Orlando Calapis Housekeeping
