So I am planning on putting 500 euros on Eth and Btc each(1000 in total) to hold for long term. Is it a bad time to invest in those crypto-currencies?
Those cryptos are good for investment. But I suggest that with that amount and since you are aiming for long term investment, it is better to invest it in Bitcoin since it is good for long term investment while Etherium is best at short terms like any other altcoins. You may also add a little bit because if your investment is big, the profit will also be.