The award-winning practice Mastrominas ARChitecture provides hospitality and residential design. Ilias Mastrominas, CEO and founder, studied architecture in the Polytechnic School of Milan and in the University of Thessaloniki. The practice was initially established in 1984 on the island of Kos and today it operates both in Kos and Athens. 

He is the designer of luxurious private residences, office buildings and of renowned large-scale resort and boutique hotels. Our projects obtain commercial success and are published in Greece and abroad. He collaborated with “ISV architects” in hotel projects in Kos and Patmos from 2003 and developed together the real estate company ISV+M in Athens until 2006.

The practice’s wide range portfolio includes Neptune Hotels, Patmos Aktis, Kos Aktis, Diamond Deluxe hotel, Astir Odysseus, Palazzo del Mare, Caravia Beach junior suites.  Over 34 years of experience, the expertise and the deep knowledge in hospitality projects, as well as his continuous seeking for aesthetic adequacy, are summarized in the awarded project Casa Cook Kos of Thomas Cook Group. He collaborated with Lambs & Lions, Berlin who made the art direction, overall concept and interior design. The project was the big winner in Hotel Design Awards 2017 with 5 prizes by the committee as well as the public’s special prize. It has also won the Gold award Hotel Design of the year in Tourism Awards 2018.

Furthermore, Mastrominas Architecture has won international architectural awards for Casa Cook Kos. The European Prix Versailles 2018 of UNESCO, the bronze International Design Award 2017 and the Special Mention in German Design Awards 2019. The global impact of the project is arising from the innovative design which embedded the fundamentals of traditional Greek architecture without any intention of morphological reproduction. We penetrated to the original deeper elements that attribute the sense of the spaces which we processed with a modern vocabulary.

The practice disposes great construction experience based in Construction management of large-scale hotel projects. Its construction sector is operated by two companies AVAX GP and IPODOMI SA.

Today, Mastrominas ARChitecture, operates both in Athens and Kos, with a group of young architects, aiming to transmute the firm’s significant experience into new ideas.


We provide integrated design to support hospitality projects throughout all the stages, ensuring cost construction benefits and higher performance. Through integrated architectural design we interpret the modern traveler’s oracle who seeks for experiences into investor’s oracle, in order to create a touristic product with identity, consistency and high efficiency.  

 Our principles are fine modern design, optimum functional arrangement of spaces, adaptation to the local spatial and cultural characteristics, different approach-concept for every project, landscape adjustment and embed into the fundamentals of traditional Greek architecture aiming to create cosy and relaxing spaces with outstanding ambience.


1.     Architectural design

2.     Construction design

3.     Interior design and styling

4.     Landscape design

5.     Construction budget calculation

6.     Preliminary design for submitting subvention request by the state

The longtime experience, the perfect knowledge of the complicated function of hospitality buildings, the construction experience, the detailed construction design and the accurate calculation of the schedule and the budget, contribute unique advantages to our projects.