Communication & check in was great.
Double bed was uncomfortable, old mattress, light touch; you will feel the springs. I hoped host had acted on complaints from an earlier guest but it turns out he didn’t. Host said he would try to swap the mattress but didn’t follow with action.
Poor guest bathroom drainage, had to mop up flooded bathroom floor every time after showering. Nice and clean flat with a view of the London docklands.
All in all, not good value for money at CHF450 per night.