I think my heart says yes to a flat because I actually hate gardening and am allergic to pollen !
And actually right now I don't particularly want to recreate suburban living on my own.
OTOH I don't want the DC to be miserable either when they are with me.
I think a lease would be a year but actually I have no idea.
Re: a stop-gap - not really I don't think, I had kind of thought I would stay somewhere with the DC for now and then live where I wanted to in a few years time so I don't want to get trapped into living somewhere and tie up all my capital.
Mind you, it could be fun to live in a flat with the DC for a bit and then look for somewhere WITH them onboard.
I think you are right that nothing perfect is going to come up to rent as there is so little out there, it would be wise to take something not too expensive.
Being tied up in a big house on my own with not much spare money is probably not a great choice to make for the start of a new single life - I would be better off having spare cash to do fun things with the DC or on my own.
We could go on camping weekends if we wanted some greenery I guess!
I've spent 15 years living in a big house in a big garden with not much need to go out and do day trips or activities etc. because everything the DC needed was at home.
I need to change my mentality, and actually previously I loved going out and doing things.