18 year old girl looking for accommodation for the month of May

I'm an 18 year old American female looking for cheap accommodation in a fun atmosphere! I couldn't leave the desired city field blank, but if you're from a different city and happen to see this, I'm happy to move anywhere! In May I will have just finished a year-long exchange in Southern Italy and I'm looking to experience a bit more of Europe before I fly back to the U.S. in June. I'm very adaptable and will be respectful of any house rules, preferences, etc. I speak English, a decent amount of Italian, and a bit less Spanish. The house doesn't have to be perfect, although I like lots of natural light and I need something with a kitchen. I prefer younger roomates (that doesn't seem to be a problem with this website) and something within 15 minutes of the city by foot.