The apartment is located in the middle of Big Terminal Shinjuku Station. It takes only 3min walking from station. It is on the JR Yamanote Line, lots of transit available, so it is convenient to visit other places !
You can wear armor in the samurai museum, but it costs 280$ or more. But, it's free here.
★Samurai house is also in Ryogoku(AKIHABARA)