Smaller than it looks in the advertisement. They make you fill in a questionnaire and upload passports of everyone staying on the iPad at the front door that you need to interact with to check in and get inside the house. The issue is this is a Japanese legal requirement but most ask for it in advance on the messaging function of Airbnb so it doesn’t becoming an inconvenience. Also check in is at 4pm, I had not received any instructions up to 315pm that day so I messaged to ask what the check in process was. Lastly what the advertisement doesn’t tell you is that to get to the unit you have to climb 2 sets of stone staircases which was a pain with a 4 person group having 4-5 bags. This was a BIG inconvenience.