C++ Two Dimensional std::vector best practices

Question

I am building an app that needs to have support for two dimensional arrays to hold a grid of data. I have a class Map that contains a 2d grid of data. I want to use vectors rather than arrays, and I was wondering what the best practices were for using 2d vectors. Should I have a vector of vectors of MapCells? or should it be a vector of vectors of pointers to MapCells? or references to MapCells?

class Map {
private:
    vector<vector<MapCell>> cells;

public:
    void loadMap() {
        cells.clear();
        for (int i = 0; i < WIDTH; i++) {
            //How should I be allocating these?
            vector<MapCell> row(HEIGHT);
            for (int j = 0; j < HEIGHT; j++) {
                //Should I be dynamically allocating these?
                MapCell cell;
                row.push_back(cell);
            }
            cells.push_back(row);
        }
    }
}

Basically what way of doing this is going to get me in the least amount of trouble (with respect to memory management or anything else)?