The stop is Chidoricho. I expect this will be little more than a wide spot in the road. I have been on other stops on this line, and it's more what one would expect from a rural area than something in a booming metropolis. Pay particular attention to go through the ticket gates on the right side of the tracks or you will be going the opposite direction you want, since there are no bridges across the tracks.
Chidoricho is on the Tokyu Ikegami line. Which means the JR pass doesn't work on it, and getting a subway pass isn't an option either. From Chidoricho it costs 120 yen one way to get to Kamata on the JR Keihin Tohoku line (yes, I know that name makes no sense; trust me, it is a JR line) and 190 yen to get to Gotanda on the JR Yamanote line. The Keihin Tohoku parallels the Yamanote from Shinagawa to somewhere beyond Nippori. This would be the preferred route for Tokyo, Akihabara, Ueno and Narita Airport. (For the airport, I'm thinking of taking the Keihin Tohoku to Ueno -- since they will have escalators -- and then catch the Keisei Skyliner out to Narita.) For Shinjuku, Shibuya, Ikebukuro and Harajuku it makes more sense to go through Gotanda.
It's about 20 minutes to Gotanda, or 6 minutes to Kamata. I've been through Kamata before -- it's where we meet up to go to iaido testing. It's a reasonable sized station, and has a bakery and a McDonalds. I'm sure there's more but I haven't ever really explored the station. Outside the station (but near-by) is something listed with the intriguing name of "Aroma Square", a drug store, and an Animate.
Info on Kamata can be found in English here and in Japanese here
And now it's probably time to go to sleep, since I just read a train name as the "limited express Kaijuu". Which, while potentially nifty, is probably not the right name. And makes me start thinking silly thoughts like, "How apporpriate would it be to take the limited express Kaijuu out to the makeout point?"