The requirements for documents needed at check-in depend on the type of accommodation and the applicable regulations. For hotels and other accommodation facilities, a Russian passport, an international passport, or a driver’s license may be accepted. For apartments, serviced apartments, and other properties where check-in or contract conclusion is carried out according to the rules of a specific property, the required documents are determined by the property itself. Russian citizens: Adults (aged 14 and over) must present a valid internal passport at check-in (international Russian passports and driver's licenses are not accepted). Birth certificates must be presented for all Russian children (aged under 14) at check-in. If a Russian relative or legal guardian (rather than a parent) is traveling in Russia with a child under 14, that relative or legal guardian is also required to present documentation certifying authority to accompany child at check-in.