The Romanian National Tourist Office (www.romaniatourism.com) maintains a wonderful website with a trove of useful information. There's a large English-language section on festivals and events, accommodation and tips on what to see and do all around the country.
Romania’s national network of tourist offices has made encouraging strides in recent years. Nearly all big cities (with the notable exception of urban centres in Wallachia like Craiova, Ploieşti and Piteşti) have decent tourist offices. Tourist information can still be tough to track down in rural areas.
If you turn up in a city that doesn't have a tourist office, you're pretty much on your own. Local bookshops or newsagents can sometimes sell a local map, but don't expect much help from local travel agencies. They are far more preoccupied with outbound travel by Romanians than with assisting visiting foreigners.