When travelling with our one-year-old son, whenever we go overseas (we live in the US), I always email the GM or reservations at the hotels we are staying at to let them know we will need a crib for our son and if there is an additional charge for him (I have seen many conflicting policies in individual hotels before). A rollaway may be different. In my experience, European hotels (including SPG hotels) are strict w the number of people in the room, however, when I have emailed ahead, they have always waived any charge for cribs or extra person. Its better to know ahead of time so you can change your travel plans if needed instead of being surprised at the hotel when you show up.