 We booked for a standard king room for me my husband and 4yr old kid However they said they couldnt let my child stay in the same bed with us even if their policy states that choldren below 12 stay for free as long as sharing existing bed We ended up paying additional 50 per night which was out of our budget It was such a hassle and it was a really unpleasant experience 
 The rooms were clean and location was easy access 15 mins via heathrow express and there are a lot of buses to ride on going to oxford st picadilly etc 