Looking for a 1 bed/studio rent around Shad Thames for 6 to 12 months for my mom

Hello!
I am looking for a studio or small 1 bedroom flat to rent around Shad Thames from September. Anyone can recommend me an affordable agency or a point of contact that can eventually help me? I am having my first baby in September and my mom is coming from overseas to help us out, unfortunately there is 0 space left in our tiny 1 bed. She is looking at a 6-12 months rental (min.). Of course, website likes Zoopla or local agencies like Cluttons only feature luxury properties and ask for a tone of papers. She is retired in France so she won't be able to provide all they ask for that is why we are looking for more accommodating/friendly options (I don't lose hope!!)
Many thanks in advance!!! Really appreciate any kind of help or clues :)) Cristina

Cristina just a thought, how about contacting Travel Inn or Travel Lodge asking for prices of standard basic long stay prices? Especially in September when tourist season is almost over..?

"and ask for a tone of papers. She is retired in France so she won't be able to provide all they ask for."

Just a thought, can you not rent it in your name?

Have you tried the Blackcatz estate agents in Borough high street. It seems to only deal with rentals & the propeties in the window often seem to be a reasonable price. This is not a recommendation as I have had no dealings with them, just a thought.

Cristina, request this broker https://tranio.com/ They seem to have only expensive apartments for rent in the catalogue, but if you leave a request on the website, they connect you with few local estate agencies in London who must have proper options. Don't worry, it is a free service for clients

We've lived in The Circle for nearly ten years, and when my in-laws come over to visit (usually for around a month) they use this company, who have several flats dotted around the two blocks – I have no other affiliation with them other than having met the owner.

Link