What is it like there?
Bolivia is about the size of Texas and Oklahoma combined. It's best to go between the months of May and July, because any other time of the year the country gets hit by either cold fronts, or lots of rain. The terrain there is not THAT diverse. There are the Andes and the lowlands. A majority of the country lives closer to the Andes, and the lowlands are sparsely populated. Most of the population however, is considered to be poor. Bolivia is said to be the poorest country in South America.
What is there to see?
There are a TON of attractions in Bolivia, most of which are geographic. There is Lake Titicaca, which happens to be the highest navigable lake in the world, there's also the Yungas road, which is on the side of a mountain and is dubbed as the "most dangerous road on the planet". There's also the Madidi National Park, it is one of the most biologically diverse parks in the world, covering more than 7,000 miles. You can also go and see Tiwanaku, an ancient city that was there even before the Incas. The best attraction in my personal opinion, is the Salar de Uyuni. It is known to be one the flattest places on Earth. It is a gigantic salt flat spanning more than 4,000 miles.
Where would I stay?
In order to get in, you will need your passport, a visa, and possibly all of your vaccinations. After that, there aren't any restrictions on what kind of currency you use or anything like that. Airfare to Bolivia this summer will be around $1300 'round trip. The best route for lodging would be through any of the commercial hotels and resorts, because the family owned ones can be potentially dodgey.
What can I do?
You can always visit any of the major cities in Bolivia as well. In Sucre for example, there is all kinds of interesting artistic things and all kinds of food. You can find things like art museums, garden cemeteries, rock climbing, theaters, and even dinosaur parks. Most of these are pay to enter, but they are definitely worth the money. You'll be able to eat things like Chairo, Fricase, and Lawa. All of which are pretty cost effective.