Ireland's hotels are facing €60 million in reopening costs, according to the Irish Hotels Federation.
Under the latest Government plan, hotels and guesthouses can reopen to guests from this Wednesday, 2 June.
An IHF survey suggests that it will cost around €964 per bedroom to reopen or over €72,000 for an average 75-bedroom hotel.
With this in mind, the IHF is seeking a doubling of last year's reopening grants.
"Quite simply the cost of reopening is a huge cashflow challenge for most hotels and guesthouses who have already experienced nothing short of a catastrophic financial shock from this pandemic with months of prolonged closure and partial reopening," said Tim Fenn, Chief Executive of the IHF.
According to the IHF survey, members estimate that they are spending almost €25 million on payroll, training and recruitment costs during the four weeks ahead of re-opening on Wednesday, net of EWSS supports.
Meanwhile, cleaning and maintenance costs associated with the prolonged closure, as well as costs related to fixtures, fittings and other safety measures linked to Covid-19 restrictions are estimated to cost a further €15 million.
"Businesses want to open in a sustainable manner, and cashflow is critical to ensuring this," said Mr Fenn.
He said that many hotels depleted their own cash reserves in the past 15 months, in a bid to survive until restrictions eased and businesses could reopen.
"Continued supports are a necessity until tourism recovers in earnest - and at best, 2022 is the first opportunity to do this thus necessitating the requirement for supports until March 2022 as a minimum and beyond that for VAT," he said.