Shortly after 19:00, 4 appliances from Ryde, Sandown and Newport were mobilised to the scene at George Street, where smoke was seen billowing out of a 1st floor window.
Crews wearing breathing apparatus and equipped with hose reel jets fought the fire both externally and internally.
This comes just 2 days after police were called to the same address where broken windows were discovered but no persons were located.
This fire is the latest suspicious incident involving derelict Island hotels after similar occurrences at properties including The Ocean Hotel, Parkbury Hotel and Grand Hotel all in Sandown.
A spokesperson from Hampshire Constabulary has told Island Echo:
“We were called at 7.07pm last night (3 August) by the fire service reporting a fire at Hanover House, George Street, Ryde.
“This is being treated as suspected arson, and enquiries remain ongoing.
“Anyone with information that could assist our enquiries is asked to contact police on 101, quoting 44220313323.”
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