The variety of landscapes and views, and also the types of activities available, should me taken into consideration when selecting an appropriate place to lay your head. Lakeside? Forest? Ski Center? Downtown?

Different types of accommodation:

Cabin - Usually an independent structure, with all the basic facilities you'd expect in a normal house.  This is a very misused term, and some use it to mean anything other than a hotel.  Bariloche has numerouse options in cabins.

Hotel - Larger establishments, with on-site reception and usually with multiple floors.  Generally with sleeping facilities and bathroom.

Lodge - Sometimes called an "Estancia", lodges are great for getting away from the city and seeing Patagonia without the crowds.  Usually 3 or 4 stars, many are all-inclusive (meals, excursions, fishing, etc.) 

Hosteria - Usually a smaller family run option, with a common lounge area and basic facilities.  A good option for groups.

Bungalow - A mix between a cabin and an apartment, with several units under one roof.  Typically smaller and independently operated.

Apartment/Condo- Could be considered a small hotel, with multiple units in one structure.  Many have on-site administrators.

Campgrounds - Range from basic/rustic to full service.  In summer campgrounds fill up with families and budget travelers looking to reduce expenses.  Bariloche has about 15 campgrounds within an hour of the city.

Private Rentals - An increasingly popular option for independent travelers.  Range from entire houses sleeping up to 10 guests to small apartments for 1-2 persons.  Generally cheaper than equivalent cabins or hotels, but have the disadvantage that there is no on-site administrator.  Great option for those who want to see "how the locals live".