PhD student on 3 month internship in Bristol

Hi,
I'm Ben. a 25 year-old PhD student doing an internship with a start-up in Bristol over the summer and am looking for a place to stay. I'm excited to find out more and live in a new city alongside my work. I'm pretty relaxed about most things and enjoy sports and any outdoor activities. I'll be out working most of the days and I hope to fill my weekends exploring the city and surrounding area.
I'm looking in for south/west/central Bristol to be close to where I'll be working. I ideally would prefer a double bed, but other than that my only preferences are for access to a kitchen and somewhere to store my bicycle safely.