We stayed in hotel Nova as a lot of the more central hotels were fully booked. We were a bit worried that it would be far away from the city centre, but the location turned out to be great. It only takes about 20-25 min to get by u-bahn/s-bahn to the city centre (in the weekend they run all night), and you can even get the u-bahn straight to Alexander platz. From Alexander platz you also have the option of taking the tram. From the airport you only change the train once. The area around the hotel is nice enough too, not really for going out, but there are quite a few restaurants, small shops and cafes around. The staff was extremely friendly and helpful, happy to help out with any query and very welcoming. The room was really big, recently renovated/modern, comfortable beds and super clean. We didn't try the breakfast, but there was a great bakery two minutes down the road (away from the station) with great breakfast options for €7-10 for two people. There's also a small shopping mall with a supermarket and pharmacy across the road. All in all excellent value for money and couldn't ask for better service! Thanks so much to the lovely and very accommodating staff! :)