Average stays booked on the site have been 2.8 days while average booked rates have increased by £8 year-on-year.
More than half of UK travellers on the site booked domestic trips to cities including London, Birmingham and Manchester while 74% of US travellers booked domestic destinations.
Utell is ploughing ahead with its enhancements of the site including a new homepage, microsites for its cities, search engine optimisation and increased affiliate marketing activity, despite the current economic climate.
The site also features travel guides, podcasts and a blog.
Hotelbook features more than 6,000 independent and small group hotels across 2,000 cities.