It's a nice room in a modern appartment in Eppelheim near Heidelberg (15 min. with public transportation to Heidelberg City center and Mannheim). The tram runs every 10 min. You will have full access to everything you need.
The appartment is in a nice neighbourhood and supermarkets are close. It has one double bed.
To the airport in Frankfurt it takes 30min. from Mannheim with the Intercity Express train.