You can do this on projects sometimes and its not necessarily as great as it sounds. Its ok when the office building is over the road from where all the consultants stay, but occasionally the meeting rooms in the hotel get used too, especially for training and workshops and longer events needing catering. You end up bumping into the wrong people at the wrong times. Theres no privacy. Cant just pop outside for a joint in the evening because your bosses are having dinner downstairs and will see you walk past. If someone thinks you need to sign a document at 6am or 9pm there will be knocks on your door. Everyone will have to go on runs together and shit...