Our Story

The hospitality experience that characterizes Oniro Hotels has at its core the vision, perseverance, and focus of entrepreneur Stavros Efremidis. Born in Frankfurt, he found himself early on in the real estate business in Germany. Realizing the prospects and dynamics of the Greek market, he decided to come to the country to invest in real estate, emphasizing the hotel sector.

How we got here

His willingness to combine his successful business with his own hospitality perspective led him to take over the management of Oniro City in Kolonaki. He then decided to manage the hotels he had already purchased without intermediary operators or leasing options.

The start was made with Oniro Suites in Mykonos. He then returned to the capital, taking over Oniro Asomaton in the Psirri area, while in June 2025, the Oniro Milioni in cosmopolitan Kolonaki became part of the Oniro Hotels ensemble.

What Makes Oniro?

The key to understanding this move is that he realized that his philosophy answered the demands of a significant portion of the public, who were looking for a meaningful and versatile stay, both in and out of town: boutique options (up to 35-40 rooms) with amenities and service quality based on what they would like to get from a similar experience. It is no coincidence that he has a constant overview of the daily operation of each Oniro Hotels unit, intervening whenever he deems it necessary to raise the level.

Photo of Oniro hotels group

However, the path to betterment is not limited to the continuous improvement of the Oniro Hotels already in operation. His plans include the opening of another property in Sarri Street in Athens (scheduled for the first half of 2026), a significant project in Piraeus, as well as two more hotels in the Ionian Islands and Sporades - in Zakynthos and Skiathos, respectively.

Photo of Oniro hotels group

What Makes Oniro?

Photo of Oniro hotels group

The key to understanding this move is that he realized that his philosophy answered the demands of a significant portion of the public, who were looking for a meaningful and versatile stay, both in and out of town: boutique options (up to 35-40 rooms) with amenities and service quality based on what they would like to get from a similar experience. It is no coincidence that he has a constant overview of the daily operation of each Oniro Hotels unit, intervening whenever he deems it necessary to raise the level.

Photo of Oniro hotels group

However, the path to betterment is not limited to the continuous improvement of the Oniro Hotels already in operation. His plans include the opening of another property in Sarri Street in Athens (scheduled for the first half of 2026), a significant project in Piraeus, as well as two more hotels in the Ionian Islands and Sporades - in Zakynthos and Skiathos, respectively.

Our Hotels

Oniro Asomaton

Through the power of stone and natural materials, a space in the center of Athens renegotiates the visitor's relationship with the city.

Oniro City

Finesse and aesthetics in the heart of Kolonaki, the district that has always held the title of the most luxurious part of the capital's center.

Oniro Milioni

Uncompromising boutique hospitality in the perfect spot. Kolonaki introduces itself as it allows its cosmopolitan aura to reveal its character.

Oniro Sarri

Feel the pulse of Psirri, one of the areas of downtown Athens that retain elements of the authenticity of a past urban character.