Most of the themed hotels are decorated in a bit tacky fashion. But not Hotel Welcome. Here you will find very well designed rooms and decorated in a bit more tactfull maner, with anything from antique furniture to Japanese yukata.
You can choose where you want to stay overnight - whether it's minimalistic Japanese Room, Egyptian Room with sarcophagus (still not tacky!) or Congo Room with African art - it will be hard choice. Best to have a peak at the photos before booking!
More details on booking.com