Hi Robinson,
Nice idea about the Aquapark, but we are coming solely for the F1 race.
We are looking for something affordable - I guess 20-30 eur per night per person will be enough to get a nice place to stay.
Most of my friends are married and they come with their wifes. Some of them are living in Wien, Austria and we'll meet in Budapest. We plan to have one day for sightseeing and one day at the ring while girls are shopping.
I hope you got the point - it will not be one of those wild weekends, although being on the circuit is quite thrilling