Combi for Europe trip up to 500€

Hello my dear ones, I would like to make a little trip to Europe in mid-July and therefore look for a suitable station wagon. It should be robust and reliable accordingly. I would also like to sleep in it, don’t have to be super comfortable now (I’m 1.79m and slim) I’m not sure what the minimum length of the loading area would be.. you can lie a bit across then I think goes also under 1.79m. I would also like to keep the car after that about 3-4 years. Do you have to recommend me? Do you get something reasonable for the money at all? Do not have any other high demands. Budget really maximum 500€ Cheaper always better Thank you!! P.s. You can give me a few links to your suggestions so that I can orient myself, unfortunately I don’t look through at mobile/autoscout what I can expect for what price of mileage/EZ depending on the model..