Hotels usually include breakfast. If you eat, lunch is 30 euros, dinner is 20 euros, pocket money 10 euros, and transportation fee 10 euros. In other words, it basically costs 70 to 80 euros a day, excluding shopping, and shopping can be swiped. In that case, one hundred euros a Saturday will be enough. I suggest changing it to about 1000, so that we can have a spare one. You can pay for your accommodation by credit card.