There will be times when, despite being as popular as you are, you will have no connection with someone to put you up for the night. It may also be that you just want to stay in a hotel. Fortunately there are a few ways to stay in 1200 count egyptian cotton sheets for very little!
My number 1 pick is using my Starwood Preferred Guest points (SPG) that I gather by using my SPG American Express credit card. Upon approval you are given 25000 points, enough for two nights at the W hotel anywhere (valued at ~$700). You can also use cash+points to pick up a room for $40-60. More info here (let me know if you apply so I can get the referral bonus though!)
If you don’t have an SPG Amex, then my number 2 choice is an iPhone/Android app called Hotel Tonight. It gives you super deals on curated hotels in most major cities, but the catch is you can only book the hotel that day. The hotels they pick are all carefully chosen and so you won’t go wrong. Use my invite code ‘krobertson7’ and get a $25 credit for your first booking!