I do not tip the consierge for making standard dinner reservations. I would for someplace special; but standard bistros? No. That is, afterall, their job isn't it? I always tip the maid E4 and the turn down service E2 (in the States $5 and $2). And I leave these tips everyday as I usually have long stays and feel it's unfair to leave a large tip for someone at the end - I like to be sure the person who offers the service gets the tip. Other hotel staff I tip on an "as approriate" basis (laundress, special "housekeeping" requests) and room service even though service is included in the exorbitant charge.