Visiting subreddits of cities/countries you are going to as well as the respective
AskA.. communities is great way to know about a place. AskARussian is one such subreddit, it links to more similar subreddits in the sidebar.
Pod Room - Bite-sized Luxury Hotel (SF only) but pretty awesome.
Sonder - Beautiful spaces built for travel and life.
Common - Private rooms and beautiful shared spaces in friendly homes.
Hipcamp - Everywhere you want to camp.
trippy - Tiny and fast travel planner.
Visalogy - Visa Requirements and Passport Information.
Gradient Retreat Center - Place for writers, makers, and code writers to take a week away from their regular lives to focus on creative work.
Aero - Luxury Semi-Private Jets.
Tea With Strangers - Community organization that's all about making our cities feel more like neighborhoods by breaking the barriers between strangers.
Kibbo - Community pioneering a new kind of flexible and affordable housing model on the West Coast.
Duffel - Powerful and intuitive tools for starting and growing a travel business. Search, book, and manage flights across more than 20 airlines.
Gowalla - Social Game in the Real World.
Omio - Search, Compare & Buy Cheap Bus, Train & Flight Tickets.
GetYourGuide - Book Things To Do, Attractions, and Tours.
Cohabs - Private Room Rentals in Beautiful Shared Houses.
Slow TV Map - Take a relaxing virtual trip.
Random Street View - Images from all over the world.
Duffel - API to sell flights online. Search, book, and sell flights on a developer-friendly platform complete with the extras you need — from seat selection to checked bags.
Radio Garden - Explore live radio by rotating the globe.
City Guesser - Can you guess what city you're in?
City Walks - Take a virtual walk through a famous city.
GeoGuessr - Geography game which takes you on a journey around the world and challenges your ability to recognize your surroundings.
Long term visas - Travel decisions, simplified.
Tripadvisor - Read Reviews, Compare Prices & Book.
The Hoxton - Open House Hotels in London, Europe and USA.
Camp Hox - Van trips.
Flightradar24 - Live Flight Tracker.
Numbeo - Largest cost of living database.
Dtravel - Community Owned Home Sharing with Lower Fees.