The hotel offers Double Rooms for single occupancy, with a room size of 140 sqft and a double bed. Smoking is not allowed in these rooms. The Large Twin Rooms are also available for single occupancy, with a room size of 280 sqft and two twin beds. Smoking is not allowed in these rooms either. Lastly, there are Twin Rooms for single occupancy, with a room size of 183 sqft and two twin beds. Again, smoking is not allowed in these rooms.

Guests at At Inn Hotel Toyotashi Eki can spend their time enjoying the various leisure amenities provided by the hotel. The hotel features an on-site restaurant called "カフェ・ド・クリエ　アットインホテル豊田市駅店," where guests can savor delicious meals and drinks. This restaurant offers a convenient dining option for guests who prefer to dine within the hotel premises.

Unfortunately, no other specific leisure amenities are mentioned in the provided data. Therefore, it is not possible to give any additional information about how guests can spend their time at the hotel. It is recommended to contact the hotel directly or check their website for more information on available leisure amenities and activities.