I’ll check openrent now, AirBnb is like thousands of pounds, can’t find anything cheaper than £3k 😩
Do you have any local Facebook groups or what’s app groups? Where I am people are always looking for people to stay in their properties whilst they are away.
booking.com and air b&b will be your best bets, however August is the most expensive month due to Summer holidays perhaps try areas outside of direct central London, but with good transport links, i’m not sure what area you are from
I live in Camden which is ridiculously expensive but I’m happy for family to stay anywhere, everywhere is accessible to Camden thankfully, I’ve checked booking.com but it’s still quite expensive as it’s dad, older brother and 4 kids. If I was to rent an apartment, would I need to disclose how many people are staying? The kids are all so young and don’t even need their own bedroom x
I'd also ask around on nextdoor. In my area there's quite a few people who rent out their place for few weeks.
Have you looked on openrent ? Also have you considered an Air B&B?