Calder S.
Yelp
Shelter is awesome! They have a great beer selection with ~30 taps and great variety of styles, including often at least one smoke beer (a personal favorite). Beers are always from small, craft producers (sometimes foreign ones) so you won't find any macro beers here (like Bud), and prices are a little higher to match this. Beers are usually served in either 13 oz, 16 oz, or 20 oz pours (depending on the beer) so definitely double-check the menu before you order.
You can order either at the bar or via your phone. The atmosphere depends on the time of day and who is there -- it's a pretty spare, modern space, so it's all about the other people there. For example, you might get some people working on laptops or get families with kids. Shelter is part of The Roost food hall so you can order food from any of the stalls there. They have four TVs for sports but they aren't huge, so you have to sit at the bar for the best view.
If you get beer here, you can take it elsewhere in the food hall, including to Caruso's next door.
Service is fine and pretty quick, if they aren't busy.
Pro tip: visit on Federal holidays (like Presidents Day) when they often discount some beers to $5, which is a steal for the great stuff they have on draft. Check their Instagram account in advance to confirm if they are running this promotion.