We've used APH for years now with no problems. Since child we have opted to stay in hotel night before flying and have found hotel + parking works out cheaper than just parking. In march we had booked a package with APH to stay at Ramada, park at hotel night before, drive in morning to APH then transfer across to airport. Lucky us for the second time we got stuck in all that snow storm and car was stuck at hotel. We spoke with the manager via email at home and he generously let us leave the car at the hotel for the duration no charge.
We were so impressed we've booked with them again this year think its £110 for family 3 staying overnight with 17 days parking onsite and they taxi you to airport for something like £10 can't remember. Love having car to dump all that overnight stuff in.