Which washroom

It's generally a compromise, it's nice to have a good sized washroom they are much easier to use. Smaller ones are OK too as long as you can manage to sort out where to step out and change clothes etc. 

Washrooms are often small in MHs and something a lot of people are happy to compromise on in order to keep the overall size of the MH down to a manageable level. The 155 is a pretty big van which could hinder your getting out and about in it and is also big for a 3500kg van which might mean the payload is miniscule.

Many people try to replicate their caravan when moving across to a MH and then find it doesn't work because they end up with something too big and unwieldy for parking in towns, seafronts and so on. Big is not necessarily best in terms of MHs.

Sorry, that doesn't answer your question but might provide a few points to ponder.

In our Unicorn Cadiz we had an end washroom with a separate shower. However, when we moved to a MH we realised to keep the size down and more importantly to have a usable payload in a 3500kg max van, we would have to compromise. In the end we opted for a Hymer with a mid bathroom. The entire floor area is a shower tray, with two drains, so it doesn’t matter which way it slopes and a screen that pulls across and magnetically seals to stop the basin and toilet area getting soaked. I actually prefer it to the separate one we had in the Cadiz as there is much more room. As it’s the first feed off the blown air, it also has the advantage of being lovely and warm in winter. For travelling two wooden duckboards line the tray to avoid any damage when using the facilities in transit.

That's a good point about blown air Steve, ours is warm too. Our van has a swing wall but neither of us really like that design, worse if you are of a large stature. As you mentioned drain holes are important, we have three, two in the shower area and one outside. Previously our A/S van had an all in one shower but had a clever arrangement of folding doors outside the compartment which made up a changing area. Some vans allow very little room to manoeuvre

TW you have made some very good points here as have other posts.

Our vans have all had end washroom side bench layouts and yes I think that is why I'm looking at these MH layouts.

Also your points about getting around unless you tow a car making it longer still, license wise I'm ok with weight.

Looks like the washroom is not the only thing we need to look at much more homework to be done and looking around.

As for not answering the question all feedback welcome. 

I'm happy to have provoked thought, PJMEG. 

In our experience, the 6.4m Coachbuilt MH we had was as big as we'd ever want to go. We later downsized to a 6m PVC which was much more manoeuvrable. Each time we change we go smaller🙂.

Horses for courses but there are a lot of things to consider to avoid making a mistake.

We know MHs are an expensive item so yes we need to get it right.

This will be a long term investment and being the wrong side of 55 we would like a fixed bed is this possible in a smaller MH without a drop down bed or should we consider missing this too and just make up a bed with the bench seats.

Sorry for all the questions but the more info I can get from MH owners the more knowledge we are armed with when looking.

It's personal preference but our choice has always been to go for parallel bunks (as you get at the front of a caravan) or U shaped seating as we find fixed beds take up a lot of room. We used the two parallel seats as single beds, although they will make a double, and it was always a simple job to remove the back cushions, unroll sleeping bags and add pillows. I know it's not everyone's choice but it suited us.

I'm not suggesting you get one but take a look at the AutoSleeper Warwick Duo to see what, for us, was an ideal layout.

Thanks again for the helpful replies.

Am I right in thinking that the Autosleeper is van conversion style again not thought about van conversions but they do seem very popular nowadays.

This is making it harder not easier 🤣, thought the hard bit was convincing her indoors still gives me more excuses to look round.

AutoSleeper do coachbuilt and PVC models. The coachbuilt Nuevo is very popular as are the PVCs. They use Peugeot, Fiat, Merc and Ford base vehicles across the range. Although far from perfect, they do seem fairly well put together compared to some brands.

https://www.auto-sleepers.com