Apart from boutique hotels, another affordable idea for a luxury trip is renting a whole house or an apartment. AirBnb is a website that offers virtually millions of private apartments for rental, all over the world. You can find luxury furnished flats in great locations at rates that are several times lower than similar hotel offers.

A furnished vacation home rental is a great option if you plan to stay for a longer period of time at one place. The same goes if you travel together with a big group of friends or family members.

Not only will you be able to save money on accommodation, but also on food, as you will be able to use the kitchen in the house to store food and prepare your own meals!

If instead of taking a long vacation, you just want to get away for a weekend, a good idea might be to rent an RV. You would be surprised that you can find luxury RVs to rent at really affordable rates! You can rent a 3-room Mercedes Winnebago View 24J RV for as low as $375 a day!

If you are an adventurer, you might be interested in house swapping. Sites like HomeExchange.com are there to connect you with people who are ready to let you stay at their home, at the same time while they are staying at your place. The best thing about this option is that it's free!

A similar website to HomeExchange is Couchsurfing.com, which will help you find a place to stay at as a guest, for which you need to return the favor in the future. If this seems strange, you should know that this company has made a several dozen millions over the course of its existence, which is a great proof that it works!