Staying in England for cultural experience!

We are 2 girls who are working during the summer here in UK to pay off our university expenses. Our job is selling educational children's books for school. We love our job and wish to have a nice flat mates to enjoy our stay here in UK in the best way for few months ;)
We are looking for nothing big. Just 1-2 beds for both of us to sleep in, a shower that does the job and a tiny space in fridge to put some groceries.
We won't be home for the most of the day, we work out of the house - leave around 7.30-8.00 am and arrive back around 10.00 pm. We sleep 8h so not much going on for us at home from Tuesday - Saturday. We will have different more flexible timetable on Mondays or Sundays and only would hang out with flatmates if they would like us to. Besides that we will be kind of invisible :D And during our mandatory quarantine in Luton we have learned to love tea time as well ;)