Can my customers filter hotel search results by things like free wifi, parking or a swimming pool?

Yes, in most cases they can. Hotel booking APIs usually send a list of facilities along with each property, covering common things like wifi, parking, pools, gyms, restaurants, air conditioning, airport shuttles and family friendly features. Your portal can turn those facilities into filters or tick boxes on the search results page, so a customer can narrow a long list down to the properties that suit them.

The filters only work as well as the information the supplier sends. Facility details sit in what is called static content, which is the descriptive data about a property rather than the live price and availability. Some suppliers describe their hotels in great detail, others are much thinner, and the same hotel can be described differently by two suppliers. That means a property that genuinely has parking may sometimes be missing the tag for it, and a customer filtering strictly on parking would not see that hotel at all.

There is also a difference between a facility existing and a facility being free or included. A hotel may be listed as having wifi or parking when either one is charged separately at the property, and some facilities such as a pool can be seasonal or closed for maintenance without that showing in the data. Facilities are usually described for the whole property too, so something listed at hotel level will not always apply inside the specific room your customer picks.

It is worth deciding which filters matter most to your customers and checking what your connected suppliers actually provide for those, and for anything a trip depends on, such as accessibility or a confirmed shuttle, confirm directly with the hotel before you promise it.