Stefan is a great host, the check in process was very smooth, the location is great, very close to city center and just 8 mins walk from the skybus airport express stop, so it is really convenient. Just be aware that his house is located at a higher ground so its a bit feeling like climbing a small hill from the skybus stop, especially if you choose to walk with luggage tagging along.
Also, as described, you need to further climb a bit of staircase (equivalent to one storey high) from the gate to reach the front door so it wont be suitable at all if you have mobility issue
One suggestion, may be he can provide some rubber slippers in the bathroom to make the quest even more comfortable as the tiles can get very cold especially at nite while the rest of the house has wooden floor which does not have the same issue.
Overall my stay is very pleasant and my room has a window that enables me to see the valley of houses below, and enjoy the sunrise or sunset which is the best point if the house for me. Highly recommended. Cheers!