I agree with @Lisa723 .
All professional interiors photographers use wide-angled lenses for the reasons she has stated and certainly, both the Airbnb photographers I have had round used them. It's impossible to photograph a large room properly without one. I have tried and failed.
I do wish they would tone it down a bit though as it isn't so necessary to use such a wide angle on a small room and that's when things tend to get distorted, but the Airbnb photographers had a lot of rooms to photograph in my place so I guess they didn't have time to keep changing lenses.
Still, I think overall the photos are a very fair representation of my place, as can see from my reviews. Many of them mention that the house looks just like the photos or better, so I don't think I am conning guests in any way.
Out of hundreds of guests, I've only had two who have mentioned that they felt the place was smaller than it looked in the photos, but I do think size is a relative thing. My house is 2.5 times the size of the average UK home, let alone London one, so anyone familiar with London housing would know it is pretty large and most of the rooms are also big.
However, both of these guests were from places where the houses are huge. One of them booked the room at the top of the house, but complained about the stairs. She complained that the 0.3 mile walk to the tube station was 'extremely difficult and strenuous'. Again, she came from a place where people don't walk anywhere, so a 5-6 minute walk was completely beyond her. So, I really couldn't take her comments about the size of the place seriously either. You are always going to get some guests who project their desires onto a listing, rather than paying attention to what is actually there.