This is kind of hypothetical, as I don't have DCs yet, but DP and I are hopefully going to start ttc next year and I am already making hideously premature plans getting excited.
I also plan to sign up for nursery basically as soon as we start ttc because I know about the difficulty of getting places.
So.... where I work there is an on-site nursery. A colleague uses it for her two DCs and loves it. It is about 2-3 min walk from my office, so if anything ever went wrong, I'd be there like a flash. DC would commute in with me to work and we could spend lunch together sometimes, etc. I would probably also get a discount as a staff member, though not much of one.
There is also a nursery about 15 min walk away from where I work. It is highly rated, and another colleague uses it and loves it.
The difference between the two nurseries is that the first has no outside area. Instead, they have this weird 'open basement' set-up - kind of hard to explain - where the bottom floor is just below ground level and has safety bars around it, but is otherwise open to the air - bit like an underground parking garage. The children play there every day, but they're not out in the sunlight.
The other nursery has a garden where the DCs go out when it's not raining. Colleague A says the on-site nursery is fine; Colleague B says she can't imagine not allowing her DS to play out in the sun 5 days a week. I have to say I'm leaning towards convenience - but am I being unreasonable/ neglectful??