Recently stayed at Hilton doubletree.......................Fabulous, didnt realise when booking you got a free cookie, however friends that we booked with pointed this out during the stay. We were given ours on departure after enquiring at customer services as for some reason did not receive ours at check in (well worth waiting for). The sky lounge leaves something to be desired for those of us with vertigo so the ground floor bar could do with being open a little later or I should retire earlier. An otherwise perfect stay recommended to all, would stay again when in London. I would like to say a big thank you to all the staff who were friendly,polite and helpful during our stay and are doing a fabulous job, well done, thank you for making our stay enjoyable.