Adult master's student looking for chill & quiet accommodation in Lisbon

Hello! I'm an easy-going master's student from the U.S. looking for a room in Lisbon before I start my Erasmus program. Preferably a room with an attached bath. I have a flexible budget. I'm a bit of a nerd about books, 70's rock and blues music, and really into coffee (I'm from Seattle). I've run my own company and have worked many types of jobs. I get along with pretty much everyone, but prefer my own space. Usually, you can find me in the kitchen by the snacks during parties, or next to the nearest pet. I'm a bit of a hermit and enjoy alone time, but am always open to adventuring when the mood strikes!