[What kind of place is Shinagawa? ]

Shinagawa is a super terminal where many trains gather.
It is the main station that connects Tokyo and Kanagawa.
Therefore, it is a station that many people use.

[How about Escort in Shinagawa? ]

Outcall is the main service in Shinagawa.
Shinagawa has many Escort Shops because it covers Tokyo and Kanagawa.
You can find cheap shops and high-end shops.