Noeliam,
I Have been living here for over a decade and never bought a car ,always on bicycles ,public ,mostly running . I use to run few K every day to work while back and quit love it ...just need to look after the MAGPIE!
If you have to go for it ,I possibly buy myself a cheap second hand with a good internal,rental will be very expensive for three months (if you pay the excess fee it will be almost double) IMO.
Safe Drive!