Positives : great location in a beautiful park, very quiet place; buffet dinner included (which I wasn't aware of making the reservation); big superior room with a fridge.
Negatives : no air conditioning in the room, the SPA very basic, the swimming pool very shallow and basic, jacuzzi with no massage (or not working), just one Finnish sauna working, the other bio-sauna closed; the water in the sauna cooling pool - terribly dirty and disgusting - I wasn't able to get in there!
The place only for Hungarians, the lady who was checking us in and the restaurant staff couldn't speak English, the information leaflet in the room - only in Hungarian.
No restaurant! There is just a canteen opening only for breakfast and dinner, serving only buffet dishes, no menu card to choose from.