Remove the '''target='_blank' ''' from the form tag if you want the new page to open in the same window.
'''Wordpress'''
If you are using Wordpress you can set this up directly SETTINGS -> Beds24 in your WordPress backend (plugin version 2.03 or greater). In case you enter a booking widget pasting in code use the short code [beds24-landing] for your landing page. If you use shortcodes to add widgets use [beds24-embed].