Everything went just fine from the begining. The host was strongly communicative, very kind and polite. We have no problems or obstacles in managing any kinds of things and situations which occured during the process of booking the house and our stay as well.
I appreciate the host had given us two keys of the house which makes our stay even more comfortable and flexible.
For those who are thinking of where to accomodate in Thessaloniki I would recomend this: In this house you will definitely find everything you need and want.