We didn't get to meet Mark, however as the keys were in a lockbox we were given the code to we could get in the house with ease. The house was very spacious with pretty much all you need, as well as being clean and comfortable. It is at a great location to visit the park, only a few minutes drive away so we drove back to the park late one evening to see the glow of the lava within the crater - which was great so it is definitely recommended.