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Key people at Flat4Day.com / HemenKiralik.com.
Flat4Day.com / HemenKiralik.com was founded in 2011 by Rina Onur Sirinoglu (Co-Founder & Managing Partner).
Founded in late 2011 by Remi Onur, Rina Onur, Mehmet Ülkü, Alper Kaya, and Okan Barlas, Flat4Day operated as a commission-based online marketplace for short-term vacation apartment rentals headquartered in Istanbul, Turkey. Also known by the brand name HemenKiralik, the platform connected regional property owners with travelers seeking residential alternatives to traditional hotels. To facilitate international bookings across neighboring regions, the system provided localized user interfaces in Turkish, English, Arabic, and Russian, alongside call center support for post-booking directions. The enterprise secured early venture capital investments from investor 212 Capital Partners in 2012 and successfully scaled its inventory to encompass 4,500 active property listings. Before officially announcing its permanent shutdown in February 2020, the company maintained a corporate workforce of 35 full-time employees servicing travelers in Turkey, Arabic-speaking, and Russian-speaking regions.
Key people at Flat4Day.com / HemenKiralik.com.
Flat4Day.com / HemenKiralik.com was founded in 2011 by Rina Onur Sirinoglu (Co-Founder & Managing Partner).
Flat4Day (also branded HemenKiralik in Turkey) is an online marketplace for short‑term and vacation rental properties that launched in Istanbul in 2012 and scaled across Turkey and nearby markets, positioning itself as a regional alternative to global players like HomeAway/VRBO[2][3].[1]
High‑Level Overview
Origin Story
Core Differentiators
Role in the Broader Tech Landscape
Quick Take & Future Outlook
Notes and limitations: public coverage is concentrated in 2012–2015 profiles and company database listings; more recent operational status, funding history, or current metrics were not available in the provided sources and would need updated company filings or direct verification to confirm present‑day scale and strategy[1][5].