1R vs 1K in Shinjuku — What's the Difference and Which Should You Choose?
The difference between a 1R and 1K is one wall. In a 1R, the kitchen and sleeping/living area share the same open space — which is why 1R units are generally cheaper than 1K units of the same size. In Tokyo, that difference typically runs ¥5,000–¥15,000/month for comparable locations.
In Shinjuku specifically, a 1R puts you within walking distance or one train stop of some of the city's most used transit interchanges — Shinjuku Station, Shinjuku-sanchome, and Yotsuya are all within the ward. For renters who spend most of their time out of the apartment and need a clean, affordable base in a central location, a 1R in Shinjuku represents one of the best access-to-cost trade-offs in the city.
The downside of a 1R is that cooking smells and warmth/cool from the kitchen affect the whole room. If you cook regularly or work from home in a defined workspace, a 1K or 1LDK will serve you better. See our full layout comparison guide for the trade-offs at every price point.
Shinjuku-sanchome & Yotsuya
The quieter, more residential eastern side of the ward — close to Shinjuku Gyoen Garden and the Marunouchi/Fukutoshin Line interchange. 1R units here tend toward newer construction and slightly higher prices but offer green space that the station-adjacent blocks lack.
Takadanobaba
The northern end of Shinjuku-ku on the JR Yamanote Line — home to Waseda University and a high density of language schools. 1R units here are among the most affordable in the ward and are well-suited to students and first-time renters, with many landlords experienced in international tenant applications.
Okubo & Hyakunincho
Directly north of Shinjuku Station, known for Tokyo's Korean and Southeast Asian communities — a highly international area with practical daily infrastructure (multilingual supermarkets, international food stores). 1R units here sit in the mid-range for the ward and are particularly foreigner-friendly in terms of landlord acceptance.
Nishi-Shinjuku (West Shinjuku)
The high-rise office and hotel district west of the station — less residential than other Shinjuku areas but has modern rental towers on its edges. Good for those who want to minimize commute to the west-side business district. Toei Oedo Line access.