The two hotels are owned and operated by Belfast’s biggest hotel group, Andras Hotels.
It launched both sites in 2009 after acknowledging a need for “quality accommodation at affordable prices” in Belfast.
In celebration of its 10 year anniversary, the hotels will receive a £1.5m investment that will go towards new lobbies and bedrooms. The refurbishment is expected to be completed over the next two years.
Rajesh Rana, director of Andras Hotels, said: “We are thrilled today to be celebrating 10 hugely successful years with our award-winning Ibis teams.
“The standards in both our City Centre and Queens Quarter hotels are consistently high. That attracts return bookings and word-of-mouth recommendations by satisfied guests.”
Both sites, which collectively employ 51 staff, have enjoyed a month-on-month occupancy rate of 85% or more in the past year.
Rana added: “In terms of success in the hospitality industry, we believe our core strengths lie in excellent service, affordable pricing, high standards and continual team development and investment and the constant evolution of the Ibis brand.
“Guest satisfaction underpins every aspect of our hotels. We concentrate a lot of our time, effort and money into attracting, training and retaining the best people for the right jobs to ensure they deliver the Ibis warm welcome.”
Andras Hotels was founded in Belfast in 1981, and operates six internationally-branded hotels with 1,000 beds in Belfast.