I know this isn't 80, but I stayed here for a week when in HK:
room rates - mts
Right off a MTR entrance. You're in TST so you have access to a lot of "touristy" stuff. Free breakfast and wifi. Rooms were surprisingly nice, but beds were ROCK HARD.
And if you're Catholic and need to go to church, there's one downstairs. Every Sunday you'll see a lineup of Filipinos out onto the street. It was very interesting to see (being Filipino myself).
As for cell service- I also used 3, and it was something like 90HKD for 7 days of unlimited service. So in some places, I used my phone as a wifi hotspot for my gf who needed it. With that said, wifi might not be THAT necessary if you go that route.
Lastly, transit in HK is far and away light-years better than Vancouver service. Google will be your friend, but MTR also has an app that can help with planning. If you're one who might have tummy issues travelling like yours truly, they let you use the staff bathrooms if you ask them to. I loved getting around on the MTR/buses in HK. Makes Translink look like it's run by 5 year-olds.