Thai hotel group Siam Hotels & Resorts is to invest THB100m (US3.3m, £2.1m, 2.4m euro) in refurbishing and developing its four hotels over the next nine months.

According to a statement, the move aims to "exploit new optimism in the Thai tourism industry after its plunge last year" and to reinvigorate the brand moving forward into 2012.

As part of the redevelopments, the company will rebrand itself as Sukosol Group with the Siam City Hotel being rebranded as "The Sukosol" when it relaunches in 2012.