There are several products on the market that are worth taking a look at, first is a very simple 90° elbow, install the elbow onto the inlet then connect the hose to the elbow. The advantage of this is that the hose comes up from the bottom and exerts far less stress on the fitting, but what about filling that pot or bucket with water or washing your dirty feet.
The solution is this combination 90° fitting with a faucet connected to it. I have been using the Camco 22463 90° Water Faucet this year and have really found it convenient. Just like the elbow you connect the faucet to the trailer water inlet then connect the hose to the faucet, but there is more….
Finally have you every consider what would happen if one of your water lines leaked inside your trailer while you were away for the day? I know many owners that turn the water main off but those campground taps can be hard to turn, hidden in bushes, or just inconveniently located at the back of the campsite. The easy solution is to install an inline garden hose shut off between the hose and the elbow, now you can conveniently turn the supply of water on and off.