Northstar Lodge is a very nice resort. It is nicer than Marriott Summit Watch, which I also own.
However, late March condition at Northstar will be hit and miss depending on weather.
It is a long walk to the Big Springs gondola, but next to the gondola that goes up to Ritz Carlton.
Northstar is pretty good for skiing but do not have expert tterrains. But its very good for blues runs, with a few black runs on the backside.
It is not a long walk. It's about the equivalent of 2 city blocks. Literally right across from the closest dropoff point for skiers. You cannot get any lodging that is closer unless you rent one of the overpriced village condo units.
Also conditions for 2023 will not be "hit or miss" as there is more than enough snow to ski thru May. Of course Northstar closes in April because Vail doesn't want to shell for employees after that, but Palisades fka Squaw will be open thru memorial day. Generally there is always plenty of snow in March. Thanksgiving however is dicey.
There are some great black runs on the top of the front side as well as the back side. My teen loves the tough stuff and he never gets bored at Northstar. It is light years better than anything back east and in the top 3 at Tahoe (Palisades and Heavenly being the other 2)..
I'm actually very stale on Northstar due to the crowds, traffic and parking, which have all massively deteriorated over the past decades. But you avoid 2/3 by stay at Welk and can also avoid the crowds by getting an early start.