The Hungarian currency is the forint: HUF, on average EUR/HUF rate = 310, USD/HUF rate = 285, AUD/HUF rate = 200.
Budapest in August it typically warm to hot.
There are beautiful museums in town. Besides the famous ones usually recommended in touristic information, we would definitely suggest the Magyar Természettudományi Múzeum. They also have a great collection of meteorites.
Plenty of restaurants can be found all over town. Many are located along Kazinczy utca, Liszt Ferenc tér and Ráday utca, with a lot of tourists buzzing around.
For Hungarian traditional dishes there are so many places... we recommend:
Paprika (its website is under construction... but the restaurant really good)
Menza (a bit more fancy)
Piroska (this is less fancy... but really good)
Hungarian Hell's kitchen (a bit pricey, but nice)
There are restaurants cooking food from different countries. For instance, you may find Indian food at Himalaya (also nepalese food, it is really good) and Indigo (more fancy, really nice too), and Italian pizza at caffe Gianmario. We recommend to try georgian food at Hachapuri (this is a must).
If you are vegetarian or vegan do not worry, there are plenty of options also for you. We recommend:
Kozmosz (small place but good menu, really yummy and cheap)
Napfenyes (quite elegant and with a large menu, good food!)
for more options, you may check on happycow.
Budapest is the place to be if you like cakes. You need to look for Cukrászda on the map. We can suggest:
You must try the traditional strudel and the palacsinta. A good place for the traditional gundel palacsinta is the basilika.
For a tea and a small dessert in a very elegant place you could try the New York
Finally, you cannot leave Budapest without trying lángos. It is a traditional street food. You will find it everywhere walking around the city.
Bars and Pubs
Another famous place is the A38, along the river. Many things going on there, from concerts to special cinema events. They also have a nice restaurant.
There are countless bars in Kazinczy utca. Another good spot to enjoy the sunset on the Danube is at the bars in front of Balna.
Strangely enough, the largest selection of palinkas of the city is at the vietnamese restaurant absolute pho.
Hungarian white and red wines are excellent. You should try some of them while you are here in Budapest.
Budapest is called the city of baths, if you wish you should try one of them: http://www.spasbudapest.com/ (please note that Dagály is under construction for the 2017 World Aquatics Championships). The most famous Széchenyi baths are located in City Park, very close to the hotel.