Is there public wifi here? How good is it (can it stream videos)?

There’s wifi but not sure if it’s high speed to stream video

Yes there is public WiFi. It's pretty good.

It's good but after sometime it gets slower

There is public wifi, and it's pretty good quality.

jinjin wang there is Free public wifi. As for your second question I'm unsure of the quality. It should be solid being as it's a public wifi.