Be aware that the average price for a student room with a shared bathroom and a shared kitchen is 390 EUR/month. The average price for a studio with a private bathroom and/or a private kitchen is 450 EUR/month. In most cases costs like internet, water, gas, electricity and heating are not included.
Your landlord can charge a fixed amount for utilities such as heating, electricity, water etc. or work with a provisional charge. The provisional charge is paid in advance and actual usage amounts are calculated at the end of the lease. Avoid any nasty surprises and ensure you clarify which of these two systems will be applied before you sign a lease.