Unless you have some great flatmates that will share their WiFi with you, best to get your own. Just pop down to your local MyPhone shop and get a pre-pay sim card that comes with data. I found that I couldn’t always hotspot to my flatmates wifi cause certain times of day/night the connections slow down – I’m guessing because the families are home and everyone is using it. Plus I had to be where they were at all times if I needed it.
Haven’t found any internet cafes but I’m guessing that is because it is so easy to get pre-paid data.
And you will need data for bus timetables, map directions and to contact people. They use Line App for most conversations rather than calling or texting.
Sharla 