Sonoma County hotel occupancy rose nearly 7 percent in April, when 64 percent of rooms filled, according to Smith Travel Research.
The average overnight room rate was $105.41, about 2 percent more than last year.
Hotel occupancy a year ago was 60 percent, with an average room rate of $103.22.
County hotels reported $12.4 million in room revenue for April, up 9 percent from last year. It was the best take for the month since 2007, said Smith Travel, which tracks the hospitality sector.
Sonoma County's travel business started to rebound in 2010 following a two-year slide.
The April survey covered 91 Sonoma County properties with 6,111 rooms.
U.S. hotel occupancy grew 1.4 percent in April to 61.8 percent, the research firm said. The average room rate was $108.25, up 4.3 percent from last year.