Do not book if you are 4 people sharing one room.
We had booked a superior dubble for 4 people. All of Glorias rooms are double rooms and no extra beds were avaliable on our arrival, so we had to share 2 90cm beds between 4 of us. Staff kept promising to send up extra beds. These arrived 5 hours before check out. Hotels should remove the option to book one room for 4 people.