I visited Hortobagy last year and stayed there for one week which I see optimal. The tourists come mainly for one day which is nothing - there are too many places to be seen. I would add to the text that there are living unique sorts of animals (e.g. grey cattle) and hundreds of birds species partly living there and partly migrating. I see the last year price of entry pass reasonable. In the village Hortobagy there are 3 hotels of differrent comfort and of course prices, camping and some offers for private accomodation - everybody can choose.