After establishing its first base outside of North America in London in June last year, HotelTonight is turning its attention to the expanding across mainland Europe.
The same-day hotel booking service for mobile launched operations in Switzerland and Germany today, the latter being one of the most important online travel marketplaces on the continent.
Four cities have been included initially (Berlin and Munich in Germany, Zurich and Geneva for Swiss travellers), with Hanburg expected to be added shortly in early-February.
The addition of Germany and Switzerland brings HotelTonight's European footprint up to seven countries after the first launch in the UK followed by Ireland, France, Holland.
The move follows it large $23 million investment round seven months ago from US Venture Partners.
As well as zeroing in on the large German market, further expansion in European puts HotelTonight in direct competition with Blink Booking after its roll-out in key European cities over the course of the past 18 months.
HotelTonight will also face a formidable foe in the shape of Booking.com, which launched its own same-day hotel booking service for mobile users in April last year.
HotelTonight claims to have now passed the four million download mark for its apps since launching in January 2011.
Meanwhile, coincidentally on the same day HotelTonight announces its expansion in new markets, JustBook says it is the "European leader in spontaneous hotel bookings".
Around 400,000 downloads under its belt and featuring 1,000 hotels in 46 European cities, are a few of its own key milestones, as well as a partnership with frequent flyer programme Miles & More.