To think sleeping in the living room would be fine?

Husband has been sleeping downstairs for last couple of years due to non sleeping babe now toddler-and my snoring, and other issues. Anyway I got a z bed style foam mattress on Amazon for around£100 and it is seriously comfy. It's navy. Slides behind the back of sofa when unfolded v neatly. A cheaper option if you want to trial it for a bit.
Makes fantastic trampoline/ leaping about prop when folded into a cube!
I keep a fitted sheet on it and he has a small basket with sheets and blankets in under a table. They take up less space than s duvet. A storage pouffe would work too .

Yes putting away every day gets annoying..

Pull down bed but also a sofa when you push it back up

I wonder if these are as good as they look... m.aliexpress.com/item/32660650289.html?trace=wwwdetail2mobilesitedetail

We live in a big one bedroom flat. Our DD has the big bedroom and we sleep in the sitting room. She is 12 but we have been doing it for years. No issues whatsoever. We have a futon bed that we can turn into a sofa if we have guests. If we don’t we all chill out on it as if it is a sofa to watch TV etc. I prefer to keep our rent down and do this than be skint all the time.

Might you be able to have bunk beds but the ones with a double on the bottom and a single on the top for your son?

I think if you sleep in the lounge you need a proper bed.

Yep that's fine OP.

Tell them this is a short term measure and you will review it each summer and they might share a room again?

In a couple of years you may prefer to split their bedroom in two with furniture?

2 mattresses and bottom pulls out to make it a double

Get a proper bed or a day bed with a proper mattress. We have an IKEA day bed in spare room and it's actually really supportive for sleeping

You can buy the plans to build a single Murphy bed ( bed in a cupboard) on Amazon. Then buy the materials from Wickes , it's (far cheaper than B&Q. It tells you exactly what to buy. The plans are £20. A double Murphy bed ready built is £500. Never seen a single one for under £300. Or have the youngest in with you. It's nice to have a separate space that's yours when they're in bed.

I did it for a long time, had a click clack sofa bed and rarely even bothered to fold it out, was really comfy to sleep on as it was. It also have storage for my duvet.

Futons and sofa beds are not great for more than a few nights. You end up with neck, back or hip problems eventually. I twice ended up barely able to stand after sleeping on two different click clack sofa beds for several months.

May I put in a suggestion for a daybed.

Couple of random pics if you can see them.

There are ones with just one mattress and ones with a second pull out mattress to suit your needs.

It's single size though so may not be what you prefer.

I've done it as two flats I lived in were only one bedroom so I gave DD the bedroom and I put my bed in the lounge. If its a long term thing (I knew I wouldn't be living in those flats for more than a year or so each so not long term) I'd suggest a loft bed perhaps, so you don't lose out on space and could maybe hang curtains around the bed part to make it feel more like a separate space when you're in it

I'd probably keep the little one with me for a while.
If you do look at bed options, I've been thinking of buying a Study Bed, a similar option but according to reviews should be easy to use and put away. It might give you a bit more space as you can keep things on the desk and tucking the bed away is the bit I'd find most annoying.
www.studybed.co.uk/?gclid=Cj0KCQiA1KiBBhCcARIsAPWqoSrscsJYkcsH3yvAfzkPXXDNnEcJ2DsH3hr4zBpozk6ulw3ZW466xJ8aAidEEALw_wcB

My DM sleeps on a fold out bed a few nights a week when she's caring for my niece. It's only a cheap one but she folds a double duvet over on it and it's pretty comfortable. A better quality one may be an option and more affordable than a sofa bed. Easier to keep out of the way too.

Yes it is fine and a good idea to allow the children their own room. Try a day bed with a proper mattress which you can throw a few cushions on to make into a sofa if you have guests.

Murphy beds look great and are far preferable to sofa beds which are soso and as others have said not great for backs long term however much you pay for them. Another option might be a high rise bed for you in youngests room - pull the ladder up during the day etc so he can't climb etc. Might mean you can have a light up there and not disturb him so you can read or watch ipad etc. bit of personal space.

Could you have a trundle bed in your bedroom for you and the youngest? He could then play in there when the bed is away and you still have living space. It does my head in working and "living" in the same space, I wouldn't want to sleep there too.

Do you own or rent? Is moving in the near(ish) future an option? If you do end up staying in the living room for the time being, knowing you have an end goal in moving elsewhere might make it easier.

I haven’t had a bed for about 8 years now. Am on an narrow air bed now because sofa bed broke. I’ve given the bedrooms to the children. I’d quite like a bed and a room of my own again at some point. But it’s fine.

Yes, I don't see why not. Sounds like this probably is the best solution. Just make sure you do get something good to sleep on so you don't hurt your back.

What size / shape is the room?

And what about the kitchen? Do you eat in the kitchen? If so, you won't need a table in the living room. I'm guessing the kitchen isn't big enough for a couch / tv?

If you get one of these IKEA hemnes day beds, you can pull it out to the width you want. Then buy some big cushions for the back padding. It goes from 80cm wide to 160 cm. So for example you could buy a small double long mattress 120cm x 200cm. There are websites online that sell this size. The added benefit is that it also has drawers to store the duvet and pillows underneath during the day.

agree get a good quality sofa bed that is designed for everynight use rather than occasional.

We use our living room as mine and partner's bedroom. Have a son and daughter in a 2 bed house that otherwise we really love. It's worked out really well and I wish we'd done it years ago! We've a king size bed and a big armchair in the corner plus bean bags. The sofa beds we tried were so uncomfortable so thought sod it let's just get a bed. It really works for us as we barely used the living room anyway. I'd deffo reccomend it though!

In terms of the space problem you could get one of those singles that folds and goes under the other single. Then pull that out each evening come bed time. But would still leave playing space. But obviously wouldn't solve the disturbing the little one issue.