The Rezidor Hotel Group will re-launch two new properties under the Radisson Blu brand in Germany.

The Radisson Blu Hotel Dortmund will be re-branded in January 2013, while the Radisson Blu Hotel Bremen will follow in June.

The hotels will be renovated over an 18-month period.

Located in the city centre, Radisson Blu Hotel Dortmund will feature 190 rooms including five suites.

The hotel houses a wellness area including a gym, indoor pool and a sauna and solarium.

Other facilities include two restaurants, a bar and 15 event rooms spanning 14,531sq ft (1,350sq m).

The Radisson Blu Hotel Bremen will be located on the historical shopping street Boettcherstrasse and boast 235 rooms including 15 suites.

The hotel also has a wellness area on offer as well as restaurants and 14 meeting rooms.

Kurt Ritter, CEO of Rezidor, said: "We are delighted to further strengthen our long term co-operation with our business partner Pandox, owner of both properties.

"At the same time, we grow our portfolio in Germany to 53 hotels in operation and under development, and underline the importance this home market has for us."