SLS Barcelona hotel is currently under construction and will feature 490 rooms.
RHG is expected to open its first Radisson RED lifestyle property in Madrid later this year.
The IHG brand belongs to the all-suites upper-midscale category.
The 64-room hotel features a fitness centre, kids club, a library and multiple dining options.
With the acquisition, the company has also completed its portfolio acquisition from NewcrestImage.
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The 64-room boutique hotel was acquired by the group in 2009.
The company will renovate the hotel using cost-effective strategies to minimise energy wastage.
The hotel brand will help revitalise the company’s limited-service segment in metropolitan markets.
The JW Marriott Masai Mara Lodge is expected to open next year.
With this property, Scandic now offers a total of 596 hotel rooms in the Swedish city.