I have a few things to add regarding our stay at Seton Hall. My wife and I stayed there for 2 weeks during and after my surgery in October. First of all, I'll add it was very convenient for us to be so close to the hospital. We discovered quickly that the hospital cafeteria didn't serve hot meals at dinner time, but there was a choice of 2 entrees at lunch time (1 on weekends), so we just had our big meal of the day then and carried out back to the eating room at Seton. We had bought breakfast/lunch things before arriving, so we had everything we needed (occasionally had to add a few items from the cafeteria). Our only issue with the Seton eating area was that the toaster didn't pop up, so we had to watch it like a hawk.
Other things -- there are 2 Internet connected computers at Seton, but they are so locked down by Websense security that e-mail is blocked and you can get to web sites like Southwest Airlines, but the printer didn't print, so we couldn't use it for boarding passes. The tablet I brought worked fine from our room for everything I needed it for.
When we arrived, we just dropped off groceries and luggage from our rental car and returned it to the airport -- we got by fine without it. We took public transportation back to the hospital -- Flyaway bus from LAX to Union Station, Red Metro subway to Westlake/Macarthur park, and the 200 bus up the street 3 blocks to St. Vincent. Total about $12 per person. Mid-day, there really aren't any problems with the neighborhood.
One problem I had with Seton after my surgery is that I could only sleep on one side and all the pillows were so very hard on my good ear that we had to buy a pillow at Ross, a couple of blocks down Alvarado. Also, one day when I was feeling well enough for a walk during my recuperation, we had lunch at the Pollo Loco, across the street from Ross -- good food and popular with the locals.