I wouldn't worry about the sink splash, you could always put in a removable backsplash if you find it is a problem. And a dish towel strategically placed along the meeting of the two counters would eliminate that problem.
As to the slides and access, the good news is you have access to the bathroom with the slides closed. So you can stop on the side of the road and take a potty break.
Access to the fridge is definitely a problem. Some people just use a cooler in the tow vehicle during the drive. Others only stop where they can open a slide partially or fully and access the fridge that way. If you stop where you can't even partially open the slide and need in the fridge, you're going to have to climb on the sofa and over the sink counter to open the fridge.
Of all the floorplans I've seen on these larger rigs, I really like this one also. I like the flow better than the other plans. You could have visitors and sit facing one another on the sofas to chat. The table with the big window is nice for crafts, computer work, writing, etc., and since you know you spend more time at the table than elsewhere, you're not losing any sense of comfort.
Look at how you plan on traveling. Will you be doing a lot of one night stops or will you drive a day, then spend a few days, then drive some more?
If the latter, then stock a cooler with drinks and food and keep it in the truck with you. No cooked meals until you reach your stop.
If the former, then you might have to be more particular about where you park for the night - no crowded truck stops, etc., where you can't open at least one slide.
The decision really comes down to your personal preferences. If you have to have a hot meal on the road and you aren't traveling major interstates, then you might have a problem. If you can snack on sandwiches, fruits, veggies, etc., then buy a cooler and go for it!
