I have lived in Bonn for around 15 years. I went here to kindergarde, primery school and secondary school, until I graduatet this Year in June. Bonn has some really nice and pretty places and is, compared to Cologne a quite small city. If you are visiting Bonn, you have to check out not only the city itsekf, but also the nature and forests in the direct surroundings. Therefor, you should definately go for a walk in the 'Kottenforst' and walk through the'Annerberger Feld' and maybe eat at the 'Waldau'. At the 'Waldau' you can also have a look at wild pigs and differend type of deers. You can combine this trip with the best icecream in the whole town. The cafe 'Eiscafe Bianchi' lies at the border of the Kottenforst in Friesdorf and is worth a visit. In the centre in Bonn lies the 'Bonner Muenster' a catholic church, which looks fabulous from the outside, but I have to admite, that I have never been in there. If you visit during April, you can have a look at the 'Kirschbluetenfest'. Its a street, where only Cherrytrees were planted and which flower around April- beautiful! If you are searching for a good BBQ place, just grab your food, your grill and your friends and go to one of the nice shores of the Rheine in the 'Rheinaue'. You can also go for a nice run along the Rhein from the centre of Bonn, crossing the river on the 'Konrad-Adenauer-Bruecke' and going back on the other riverside. Only an half an hour drive away lies the 'Siebengebierge' with the 'Drachenfels', the Petersberg and others which should be on your bucket list for Bonn. If you like hiking and are staying longer or are living in the area, it is a must, to go hiking in the 'Eifel'. I would recommend to go in the spring or fall, as the nature is (in my opinion) the most beautiful at these times of the year.
And what can be better to end the day with a good dinner and a few drinks? 'Tacos' near the Beethoven house is the best place where's I've been so far for good food. It's my go to restaurant in Bonn for an evening with my friends. The drinks there are pretty good as well, but they can't top 'Take Two'. So if you are searching for a good place to eat: 'Tacos' an der a good place to have a few drinks: 'Take Two'.