def get_offer_3d_walkaround_link(html_parser):
    """
    This method returns a link to a 3D walkaround view of the apartment.

    :param html_parser: a BeautifulSoup object
    :rtype: string
    :return: A 3D walkaround view of the apartment
    """
    walkaround_raw_data = walkaround = html_parser.find('strong', string=
        'wirtualny spacer:')
    walkaround = ''
    if hasattr(walkaround_raw_data, 'strong'):
        walkaround = html_parser.find('strong', string='wirtualny spacer:'
            ).next_sibling.next_sibling.attrs['href']
    return walkaround
