Tübingen is another town we visited while on our short trip in the Baden-Württemberg region of Germany, this spring. A bit bigger than Nürtingen, it also has the specific German charm that I tend to like more and more.
Being in Germany for a short trip and staying in Nurtingen, having a quick visit at the Hohenneuffen Castle nearby is a good option if you have some spare time and the weather is absolutely beautiful.
Having friends outside of Romania is always a very good excuse to plan a short vacation. Especially since they live in an amazing house in the center of a nice German town, small and quiet. Just perfect for a weekend of relaxation.