Chloe's grandparents, April and Gordon, said they could not understand claims that there were no lifeguards on duty who could have pulled her from the water.
The Coral Sea Water World resort in Sharm el-Sheikh prides itself on its extensive network of swimming pools. Here's a list of facilities on the resort's website:
The Coral Sea Water World resort in Egypt, where a five-year-old British girl drowned, re-opened at the start of this month after being refurbished with a "brand new waterpark," according to its website.
The large resort has almost 370 rooms and a "waterpark brimming with pools and slides," a press release said.
This promotional video was featured on the website:
A six-year-old girl from south London is understood to have drowned in a hotel pool in the Egyptian resort of Sharm el-Sheik while on holiday with her family.
– Foreign Fffice spokesperson
We are providing consular assistance to the family at this difficult time.
The Foreign Office confirmed it has been made aware of the death of a British national in Sharm El Sheikh, Egypt on 17 May.
Tour operator First Choice say they are investigating the circumstances surrounding Chloe's death.
In a statement they said:
"First Choice can sadly confirm that a child has died while staying at the Coral Sea Waterworld hotel in Egypt. The incident occurred in a pool in the hotel's waterpark.
Our thoughts and condolences are with the family at this extremely difficult time. The British Consulate were immediately informed and they are now working with our dedicated resort team in Egypt, to offer every assistance possible to the family in resort."
ITV News London understands that a five-year-old girl has drowned at a hotel waterpark in Egypt, while on holiday with her family.
Chloe Johnson from Forest Hill had been staying at the Coral Sea Waterworld hotel in Sharm el Sheik.
Tour operator First Choice have said that they are investigating the circumstances surrounding Chloe's death.