Had the pleasure of an excellent stay here when attending the Borussia Dortmund v Apoel Nicosia game.
The hotel has been recently fully refurbished and has a real fresh feel. My room had 3 parts essentially - the bedroom, a neat living room and a bathroom - all very tastefully decorated.
Room rate of €135 was broadly in line with the nightly average elsewhere, though I was slightly alarmed at having to pay a €10 travel tax on check out so do bear this in mind.
This hotel is very convenient for taking the U-Bahn to the football (from stop outside to Stadthalle, changing there for Stadion) but is circa 50 minutes by foot from town. There are more central places to stay in Dortmund but this place had a nice secluded feel to it, despite being on a busy dual carriageway.
I would definitely stay again.More