22 & 23 year old girls searching for an apartment

Hello, we are two female students from Germany. We are 22 & 23 years old and study International Management. We will do an internship abroad in Barcelona for six months starting in March 2024. We are searching for an apartment with either two single rooms or 1 room with two single beds. If there is an student residence/shared apartment available we would like to stay together in a flat as roommates. Our budget is max 650€ per person (bills included). We already have a safe contract with a company and get financial support in form of erasmus.