there is no set legeal age. parents decide on this.
15
16
Yes it's perfectly legal.
There is currently not a law that specifies the age a child has to be to stay home alone overnight. It is left up to the parents to decide if their child is mature enough to handle it.
Depends on how much you care about the well being of your child.
There is no minimum legal age to stay in a hotel. People bring infants to hotels all over the world.
Depends on the parents. If he is untrusworthy, then no. If the parents trust him, then yes. Legally once you turn 12 you can stay at home by yourself.
It depends on your definition of child. Some nine year old individuals can be responsible when left alone. On the other hand there are 17 year old individuals that can't be left anywhere alone. Still, I am a firm believer that if you have to ask a question like this, your not ready to leave any child alone. All it takes is one disconnect for something to go terribly wrong.
There is no legal age limit in the UK, it is left up to the parents discretion. However they can be prosecuted for leaving a child home alone for an extended amount of time in detrimental conditions. For babysitting you just have to be over the legal employment age.
There is no law that specifies an age. However, the child must be safe, feel as if they are safe, and be able to get help if they need it. Probably 14 to 15 if they are trusted by their parents.
12 is the normal legal age for being left alone, it is okay for a 13 year old to be alone overnight. Never mind the legalities, do you feel happy leaving him/her alone? I have 3 children (all now well over 13) and I would have left one of them, but not the other, they would have burned the house down.
Over night, 15