I know it sounds obvious but staying somewhere with a good level of amenities definitely does wonders after a long day on the bike. Saying that you do not need to break the bank to find accommodation that has a few mod cons. We got a week's accommodation in a little village in the valley down the road from some incredible trails for just £300 for the week. Spread over 2 or 3 guests it is a very small expense. Below is a list of a few things I would highly recommend.
Wifi - In our pampered lives, being able to switch off in the evening’s after a big day on the bike and catch up on the World Cup action or chat to people back home. Saying that there is nothing wrong with a good book or magazine. One other big advantage to Wifi is access to sites like Trail Forks and Strava. This is where we did all the route planning for our trip which I will go into more details later.
Outside water source - For reasons mentioned above, being able to rinse off degreaser or similar makes life a lot easier. Also if the heavens do open, being able to rinse the mud off kit before it goes in the washing machine will make your landlord very happy.
Washing machine - Some of us don’t have enough kit for a week's worth of riding or have to pack light to get through baggage allowance, for example. I know this is a chore that we very much try to avoid, but the feeling of fresh kit and slipping into some grotty shorts you have ridden for the last few days works wonders for your stroke levels.
Kitchen/cooking - Eating out in the mountain biking Mecca’s can be pretty pricey and a good way to save costs is to cook yourself. It can be a nice way to chill out in the evening when riding is done and is a sociable activity, but it does comes with a proviso. Make sure the kitchen is well stocked with utensils and isn’t too small. You won’t spend a lot of time here, but there is nothing worse then getting in each other's way trying to boil water on the hob to make some coffee, whilst someone else wants to use the same water to poach some eggs.
Private space (share with up to 2 others) - These types of trips are always better with friends, but some of us like our privacy more than others and being able to chill out and do your own thing for a while is super important. Sleeping areas are always a good place to do this, but are hard when you are sharing in a bunk house or similar. Trying to keep a number of people to a room to 2-3 others quiet time is hard to come by.