The apartment was stunning - the interior was the most beautiful I've ever stayed in. So tasteful, yet simple. Clean, bright, airy. I particularly loved the bathroom and shower.
Communication with the host was fine.
The location was central, on a pedestrianised shopping street. This meant there was some noise from outside (passers by and building works) but shutting the window solved that problem.
However, the actual building was not well insulated for noise and wooden floors didn't help. I'm sure the people upstairs didn't mean to be noisy, but whenever they walked around it sounded like they were wearing clogs. By the third day I found the noise from the flat above irritating, especially as that night I was woken up at 5am by loud footsteps above . My husband hardly noticed it, so perhaps it was just me. Anyway, this slightly tainted my experience.
I would give the apartment itself 5 stars based on its visual appearance and facilities, but have lowered the score due to noise. Take ear plugs.