public class Location
{
    private int _id;
    public int ID
    {
        get { return _id; }
        private set
        {
            if (value == default(int))
                throw new ArgumentNullException("ID");
            _id = value;
        }
    }

    private string _name;
    public string Name
    {
        get { return _name; }
        set
        {
            if (string.IsNullOrWhiteSpace(value))
                throw new ArgumentNullException("Name");
            _name = value;
        }
    }

    public string Description { get; set; }

    private string _address;
    public string Address
    {
        get { return _address; }
        set
        {
            if (string.IsNullOrWhiteSpace(value))
                throw new ArgumentNullException("Address");
            _address = value;

            GeoCoordinates = IoCContainerFactory.Current.GetInstance<Geocoder>().ConvertAddressToCoordinates(Address);
        }
    }

    public Coordinates GeoCoordinates { get; private set; }

    private Location() { }

    public Location(string name, string address)
    {
        Name = name;
        Description = string.Empty;
        Address = address;
    }

    public Location(int id, string name, string description, string address, Coordinates coordinates)
    {
        if (coordinates == null)
            throw new ArgumentNullException("GeoCoordinates");

        ID = id;
        Name = name;
        Description = description;
        Address = address;
    }

    public class Coordinates
    {
        public decimal Latitude { get; private set; }
        public decimal Longitude { get; private set; }

        private Coordinates() { }

        public Coordinates(decimal latitude, decimal longitude)
            : this()
        {
            Latitude = latitude;
            Longitude = longitude;
        }

        public override bool Equals(object obj)
        {
            if (obj == null)
                return false;
            if (!(obj is Coordinates))
                return false;
            var coord = obj as Coordinates;
            return ((coord.Latitude == this.Latitude) &&
                    (coord.Longitude == this.Longitude));
        }

        public override string ToString()
        {
            return string.Format("Latitude: {0}, Longitude: {1}", Latitude.ToString(), Longitude.ToString());
        }
    }
}

public class LocationViewModel
{
    public int ID { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
    public string Address { get; set; }
    public decimal Latitude { get; set; }
    public decimal Longitude { get; set; }
}

public class LocationCreateViewModel
{
    public string Name { get; set; }
    public string Description { get; set; }
    public string Address { get; set; }
}

public class LocationDetailsVieWModel
{
    public int ID { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
    public string Address { get; set; }
    public decimal Latitude { get; set; }
    public decimal Longitude { get; set; }
}

public class LocationCreateViewModel
{
    [Required]
    public string Name { get; set; }
    public string Description { get; set; }
    [Required]
    public string Address { get; set; }
}

public Location ToDomainModel();

public static ConstructFromDomainModel(int id);
public static ConstructFromDomainModel(Location location);

public class CreateUser
{
    [Required]
    public String FirstName { get; set; }
    [Required]
    public String LastName { get; set; }
    [Required]
    [DataType(DataType.EmailAddress)]
    public String Email { get; set; }
    [Required]
    [DataType(DataType.Password)]
    public String Password { get; set; }
    [Required]
    [DataType(DataType.Password)]
    public String VerifyPassword { get; set; }
}

public class EditUser
{
    [HiddenInput(DisplayValue = false)]
    public int Id { get; set; }
    [Required]
    public String FirstName { get; set; }
    [Required]
    public String LastName { get; set; }
    [Required]
    [DataType(DataType.EmailAddress)]
    public String Email { get; set; }
}

public class DetailsUser
{
    [HiddenInput(DisplayValue = true)]
    public int Id { get; set; }
    public String FirstName { get; set; }
    public String LastName { get; set; }
    public String Email { get; set; }
    public String Password { get { return "Not Shown"; } }
}

var editUser= user.MapTo<EditUser>();

public class UserInformationViewModel
{
    [Required]
    public String FirstName { get; set; }
    [Required]
    public String LastName { get; set; }
}

public class UserContactDetailsViewModel
{
    [Required]
    [DataType(DataType.EmailAddress)]
    public String Email { get; set; }
}

public class UserPasswordViewModel
{
    [DataType(DataType.Password)]
    public String Password { get; set; }
    [Required]
    [DataType(DataType.Password)]
    public String VerifyPassword { get; set; }
}

public class CreateUserViewModel
{
    private UserInformationViewModel _information;

    public UserInformationViewModel Information
    {
        get { return _information ?? (_information = new UserInformationViewModel()); }
        set { _information = information; }
    }

    private UserContactDetailsViewModel _contactDetails;

    public UserContactDetailsViewModel ContactDetails
    {
        get { return _contactDetails ?? (_contactDetails = new UserContactDetailsViewModel()); }
        set { _contactDetails = information; }
    }
    private UserPasswordViewModel _password;

    public UserPasswordViewModel Verification
    {
        get { return _password ?? (_password = new UserPasswordViewModel()); }
        set { _password = information; }
    }
}

public class EditUserViewModel
{
    [HiddenInput(DisplayValue = false)]
    [ReadOnly(true)]
    public int Id { get; set; }

    private UserInformationViewModel _information;
    public UserInformationViewModel Information
    {
        get { return _information ?? (_information = new UserInformationViewModel()); }
        set { _information = information; }
    }

    private UserContactDetailsViewModel _contactDetails;
    public UserContactDetailsViewModel ContactDetails
    {
        get { return _contactDetails ?? (_contactDetails = new UserContactDetailsViewModel()); }
        set { _contactDetails = information; }
    }
}

// For details view I would use either inheritence or simply add the Verification attribute onto a new
// class.  Lets go with inheritence for now
public class UserDetailsViewModel
{
    private UserPasswordViewModel _password;

    public UserPasswordViewModel Verification
    {
        get { return _password ?? (_password = new UserPasswordViewModel()); }
        set { _password = information; }
    }
}

UserContactDetailsViewModel => _UserContactDetails.cshtml
UserInformationViewModel    => _UserInformation.cshtml
UserPasswordViewModel       => _UserNewPassword.cshtml
UserPasswordViewModel       => _UserEditPassword.cshtml

@Html.Partial("_UserInformation", Model.Information)

<input id = "Firstname" name="Firstname" type="text" /> // etc

<input id = "Information_Firstname" name="Information_Firstname" type="text" /> // etc

@Html.Partial("_UserInformation", model => model.Information)

<input id = "Information_Firstname" name="Information_Firstname" type="text" /> // etc