I recently stayed at Karmen and Tomislav's and couldn't fault it. The pictures are accurate, the place was spotless and underfloor heating was amazing. What I appreciated most was the communication - my messages were replied to very quickly and they checked whether I needed anything else during my stay too. They've found the perfect balance between being attentivene and providing space that I wish all hosts had. If you're looking for a stress-free break in NW London then I'd highly recommend Karmen and Tomislav's!