Lovely house.
There is a huge amount of downstairs space for 4 bedrooms, at least one of which is modest.
Also curious that the en suite is not attached to the main bedroom. But that makes it a v good guest bedroom, I think. Or au pair / live in nanny room. How would it would it work for you?
Also the route to the downstairs loo is a bit circuitous for guests - as far as I can see it is though the kitchen? Better off the hall, maybe.
Great outside space, the studio spaces are good - but a way from the house if you would be working from home in there? Nipping for a cup of tea or a wee?
Can't comment on the price, that will depend on area. But in my not especially exalted area of London a 4 bed semi with no off-street parking can easily be £1m.
And a mile or 2 down the road, £1m will only buy you a 3 bed Victorian terrace.