hello teelak, i was internet, it looks like i need to provide a "proof of hosting/accomodation" if u r going to stay with me.
its a paper a have to ask at the city hall, showing a proof that i have a house where someone can stay. ths thing is that i have to take apointment at the city hall, can only have 24 july. and then can take maybe 15 days... i think its not mandatory for your visa application to have this, but highly recommended. so i dont know if u should still aplly now. maybe can have visa without this. or wait i have this paper.