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?
Since it is for the long term then I think that you are good with investing. ETH is currently roaming around the 300 USD level which is very stable so going in now would be a nice decision. BTC, on the contrary, just reached an ATH and is currently on its peak. You may want to wait for a bit and wait for Bitcoin to drop. Waiting too much might lead to a loss of opportunity, though. So going in now is a good decision for both BTC and ETH, just make sure that the definition of your long term is more than a year.