Actually I have never brought my B to any 育嬰室 before! Because I don't take her out too much (so embarassing
). Everytime I bring her out, I will feed her my milk in a bottle, so that's why I have never had the need to visit the 育嬰室 before I was under the impression that 育嬰室 are all free of charge, but since you said it's 5 star environment, that's why I was curious whether they charge any $ or not.