GenoHotel Forsbach

Set on the edge of the Königsforst nature reserve, this laid-back conference hotel is 2 km from Rösrath train station and 21 km from the Cologne Opera.

Understated rooms feature flat-screen TVs and Wi-Fi access. Some have forest views.

Amenities include an informal restaurant and a lively bar, as well as a garden, and a courtyard with seating. There's also an indoor pool, a fitness room, a...