Martina and Charlotte's apartment is extremely well located, in a very nice and lively neighborhood, close from the subway. The apartment doesn't have a lot of charms, it is strictly functional but not very cosy or personal. And the non-negotiable check-out time at 11 am is a bit tough. But Martina and Charlotte are very friendly and easy to communicate with. So don't expect a love nest, but it is a good option to use as a base camp to explore Berlin.