well i use operamini normally as its simply the lightest and fastest browser available on n900 working fine with most sites though it got its own nuances
on the n900 it allows for multiple instances and dozens of tabs without lag got bookmark sync facebook sharing speeddial not configurable keyboard shortcuts is battrey freindly stable enough good for reading news and stuff
i tried airbnb on it opens fine but as i am unaware how it works i ll leave it up to you to evaluate

on a sidenote i recently upgraded it to 8.0 from 6.5 and its light years better now only problem is the idocracy of opera to i.e they overhauled the ui completely even the damm botom bar that now takes me to home as from eternity it was the refresh button even they completely overhauled the damm keyboard .

opera mini
http://www.opera.com/mobile/download/versions/

phoneme
http://davy.preuveneers.be/phoneme/?q=node/10#maemo

installation instructions
install phoneme i.e (cvm_maemo-
mr2.b168+svn20547-20120523_armel.deb) from davy's page install it then download opera 8.0 from opera's official site

then open file manager locate the file and click to execute it
thats all

let me know how it panned out for you

©© this post is lightly edited under construction as its intended to be a thread later on