They don't let you use urls. To use images in their custom stylesheet you have to upload it to reddit, then use a special code or something, that gets replaced with the image url.
I prefer it when its run by a company, rather than someone renting out their apartment (I've stayed a coupleof times where they moved out of their home (once to stay with parents next door, not sure about the other)). I don't really see any advantage (for the person staying). The company ran ones are tidier, have cleaners they can arrange to come out and clean when required (like a hotel's daily clean), etc.
I use airbnb for cheap accomodation and because I can see exactly what the apartment will look like. I don't do it to talk to someone when checking in for an extra 10 minutes.
I don't get why people are making out this isn't a big issue - people would assume whatever is saved in the 'vault' is completely encrypted.
You'd never encrypt a password but leave all the filenames/directories viewable without the password...
(I've noticed this before when grep-ing for a domain, and it came up with stuff from my 1Password vaults, but couldn't work out a better solution so still stick with 1password ). Its a shame, because 1password is great in almost all other aspects.