We have a property that is currently under permission to let but we hope to change to buy to let in due course - I'm definitely not a commercial landlord and am learning as I go along. I have a good relationship with the tenant and she has been in the property now for 18m - contract (theoretically) to conclude later this year. She's asked if she can do bits and bags of redecorating over that time, most of which I've said yes to.
She's now asked whether she can have the floorboards in the hall sanded - it's currently carpeted and the carpet was put in almost four years ago but still looks good - unless something has changed in the last couple of months. The carpet was put in when we lived there and is good quality. I have no idea what the flooring is like under them.
I'm conscious about finding a balance with keeping her happy but this feels like a big unnecessary job which might make too much of a mess and be difficult to fix.
What would you do?