This link has an exhaustive list (exhausting as well if you read it all).
In Spanish though my smartphone offered me an English version.
https://www.spain.info/es/reportajes/alojamientos_para_todo
Edit - Link appears to be broken. Relevant text is:
Hotels The quality of Spanish hotels is internationally renowned. They are classified by a system of one to five stars with five-star hotels being the maximum category, as well as hotels designated Grand Luxe. The category is determined by the size of the rooms, the facilities and services it offers, and the standard of comfort… You'll find everything from simple accommodation through to the most luxurious hotels, often located in the city centres. The prices vary according to the category of the hotel and the season. If you're travelling with your family, you can choose hotels designed to serve as genuine holiday complexes, as they offer a range of facilities for children. You'll also find hotels specialised in business meetings, senior citizens, gays and lesbians...
Parador hotels There are currently more than 90 parador hotels located all over Spain, offering a total of over 10,000 hotel places. These are distinctive establishments located in natural or historic sites of outstanding beauty, and offering a range of leisure activities all year round. Many of these are old castles, palaces and monasteries, with all the comforts of the 21st century. As with all other hotels they are classified by the star system.
Tourist apartments These are normally rented by the week, fortnight or month. They are equipped with a kitchen and are very common in the coastal areas of the Spanish Peninsula and in the Canaries and Balearic Islands. They are usually classified by a system of keys, from 1 to 3 and luxe (4 keys). Other options are chalets, villas and bungalows.
Aparthotels These accommodation units combine all the advantages of tourist apartments with the services and amenities of a hotel.
Guesthouses and hostels This accommodation is more economical than hotels, and also tends to be classified using a star system of one to three stars (although some autonomous regions have their own categories). Occasionally, and particularly in the lower categories, one bathroom may be shared by several rooms.
Rural tourism accommodation Country house lodges offer friendly service from the owners of the property, a home atmosphere and home-made cooking. It is possible to rent either the whole house or individual rooms, and they make the ideal place for a getaway in natural surroundings. They are classified according to their level of comfort and facilities. There are various types of categories according to the autonomous region. You can also find rural hotels and guesthouses, generally classified between one and five stars. Within this variety, there is an increasing presence of the accommodation type known as
agrotourism: this involves staying in country houses where visitors play an active part in the daily chores with the owners, who tend to be farmers and cattle ranchers.
Distinctive accommodation The various regions in Spain each have their own traditional style of buildings which have been adapted to offer accommodation of exceptional quality and often located in rural areas. Here are just a few:
Pazos in Galicia: these are ancient noble homes which have been fully refurbished, and are genuine symbols of the history of this area in the northwest of Spain.
Casonas in Asturias: quality hotels, small and with charm, perfect for rural tourism in Asturias.
Hospederías in Extremadura, Aragon and Castile-La Mancha: these hotels are generally built on the site of historic or traditional buildings typical of these areas.
Posadas in Castile-León: all of these are located in towns with historic and architectural value or in natural areas of outstanding beauty.
Haciendas and cortijos in Andalusia: these traditional buildings were originally used as farms and cattle ranches on the surrounding estates, and today are equipped with a full range of comforts.
Masías in Catalonia : beautiful rural farmhouses commonly found in this area in northeast Spain.
Tourist campsites These have all the basic services (hot water, electricity, drinking water and surveillance) as well as properly delimited and equipped spaces on the terrain. They offer the possibility of staying in caravans, tents or bungalows. The campsites are generally classified into third, second and first categories, and luxe.
Hostels Thanks to their economic prices, these are generally the choice of young people and students, and tend to offer shared rooms with a combined rate for accommodation and breakfast. They usually have common facilities such as a breakfast room, bathrooms, recreation room and the possibility of renting towels, laundry service... The Spanish Youth Hostel Network (representing the International Youth Hostel Federation) has over 250 establishments in the main tourist areas. Anyone wanting to stay in one of these establishments must have a members' card (you can find out all about it on their web page). Spain also has what are known as 'pilgrims' hostels' to provide accommodation for people on the Way of Saint James. These include both free public hostels and others in which small donation is required. There are also private hostels which cost a little more. These are just a few of the options, but there are many others, including farmworkers' houses, caves (fully adapted for use by tourists and very typical in Granada), luxury resorts (with spa, golf course and a full range of amenities), spa resorts and mountain refuges in some of Spain's National Parks and nature reserves.