The only thing I know about Budapest is there are a lot of hostels.
I think maybe 200 but someone might clarify this.
You have to identify what your pricing can be for all types of these properties compared to your competition.
Identify who your competition is and see how they are doing.
Do you know anyone in the accommodation industry in the Budapest area?
Are you just in it for the money?
Are you bringing something unique to the market and what part of accommodation have you experience in?
I wouldn't necessarily just ask which one will bring the most profit.