Waiting for our house to be built

Needing a large double room for myself and my nearly 14 year old son for a flexible short term stay from 31 May 2026 onwards. We will need enough floor space for an airbed for my son (which I have).

We have to move out of our current rental as it's been sold and are going to be moving our furniture into storage while we wait for our new build home to be finished.

I'll have more exact dates as to how long this will be as the whole house buying process proceeds. Not going to lie, it has been quite stressful!

It would be easiest if the room was on or close to the west side (ish) of Milton Keynes, as that's where I work as a teacher and my son attends secondary, but as I do have a car, we can be flexible on this.

Posting a room wanted ad, as I'm aware a lot of shared houses don't want anyone under 18 (or over 50), or want a set time period that unfortunately we can't provide, yet.