Check out coachmen 17RDQ.We bought one earlier this year and love it.
Has a full bath(tub/shower combo,toilet and vanity.
Pedestal dinette with large picture window.
Queen size bed.Full kitchen-=range,oven,microwave,2-door fridge.
Dual axles,base weight of 3,100 lbs.All in a 17 footer!
that Coachmen 17RDQ has a great layout for a trailer that small.
and 1800 or lbs of CC...Nice Trailer..
It was always to tight for me in those toilet/shower combos. But I bet when it comes down to it everybody else around you will be glad you have it... LOL
We have a combo toilet/shower in our 15'TT and we have found it very satisfactory. We had a 19' before with separates and the surprise was the combo shower is actually roomier. Another plus is when time to clean the bathroom, you can just hose the whole thing down!
If you do get a combo, a couple things to check.
1. Make sure it has or you can add a shower curtain. Mine is on a track that covers the med cabinet, TP, towel rack and door.
2. I hear some showers drain into the black water tank - I don't think that's a good idea.
Remember everything in a little trailer is a trade off. More inches in the bath can mean less inches in the dinette etc. Your choice.