“We found the parking difficult.”
On arrival another car was parked over part of our allocated space, so we had to park across the space.
We didn’t use our car for several days, but the next time we did we had an unpleasant letter under the windscreen wiper, telling us we should not park there as we were blocking them from turning. We managed to turn so not sure what it was all about.
After we saw someone else parking their car in the space and photographing it we decided it was safer to park on the road !
As it was obvious to whoever was cross about the parking where we were staying, they could easily have spoken to us directly, instead of leaving an unpleasant letter.
I think you should warn other guests to be very careful when they park in the space provided, as there is obviously someone who is bearing a grudge.