The Riata Inn - Marfa offers a variety of rooms including deluxe king rooms and deluxe double rooms. These rooms are non-smoking and have a size of 355 sqft. The deluxe king room can accommodate 3 adults and 2 children, with 1 king size bed and 1 sofa bed, while the deluxe double room can accommodate 4 adults and 3 children, with 2 queen size beds. Additionally, there is a king room with disability access that has the same occupancy and bed configuration as the deluxe king room. Smoking is not allowed in any of these rooms.

The Riata Inn in Marfa offers guests the opportunity to spend their time at the hotel by enjoying the outdoor swimming pool. This amenity is available to guests all year round and is located outdoors. However, there are age restrictions in place, as the pool is for adults only.

Based on the provided data, the outdoor swimming pool is the primary leisure amenity available at the Riata Inn in Marfa. Unfortunately, no other specific amenities are listed, so it can be inferred that guests may not have many additional recreational options besides the pool.

The Riata Inn in Marfa has an outdoor pool available for guests. The pool is open year-round, indicating that it is available in all seasons. However, there is an age restriction, and the pool is for adults only.