A picture showing a fire door padlocked. Picture: Inner City helping Homeless
It is not clear if the padlock was in place while families were using the building.
However the charity claims a number of other health and safety concerns were raised by people housed there which must now be investigated.
The Dublin Regional Homeless Executive (DHRE) declined to comment on this image.
The building is currently restricted until "further precautions" can be put in place. This follows a meeting of Dublin City Council (DCC) and Dublin Fire Brigade (DFB) on Wednesday.
Dublin Fire Brigade said in a statement:
"The Fire Safety Certificate for this premises is currently being processed. The list of works [currently being carried out] include refurbishing of the premises to bring it to an acceptable fire safety standard considering the change of usage on the building."
A spokeswoman for DRHE said that all necessary precautions were taken to ensure the safety of the families staying there.
An independent fire consultant was drafted in to ensure that the building was safe for use as contingency accommodation she said.
These measures included the appointment of two fire marshals who are on duty when families are staying there she added.
The hotel is being converted into a “family hub” to house homeless families as part of the Government’s plan to end the use of commercial accommodation and 10 rooms are used for this purpose.
“Dublin City Council met with Dublin’s Fire Services yesterday afternoon (June 21) and will be working with the fire services over the next few days to implement further precautions to enable the facility to continue to be utilised for contingency purposes following the completion of works on the additional precautions”
The issues was raised briefly yesterday at the meeting of the Joint Oireachtas Committee on Housing, Planning, Community and Local Government.
Housing Minister Eoghan Murphy confirmed to the committee that there were currently no families staying at the hotel and work was underway to make it fully compliant for use as a family hub.