There are review sites on the Internet.
Many sites provide Japanese reviews,
and Japanese Reviews are first displayed.

I recommend you to read English review if possible.
Because they write the opinion in straight, including bad point.

I saw the English review about the hotel I am going to stay.
There seems to be many disadvantages of the hotel.

“Avoid if possible”
“What a dump”
“Poorly maintained and sub-standard service”
“One the worst hotels I have been in my life”

Hmmmm it’s radical!