If it's for hotel guests only, it's unlikely to have a great deal of equipment and may not even have gym staff (look out for words like 'fitness suite' or 'exercise room'). If it is a full gym selling membership - well, for someone who is just on a weekend visit, it is possible but unlikely that they would give him a thorough assessment unless he specifically asked for or booked one in advance, as they wouldn't see the point in drawing up a programme for a one-off visitor. They'll be happy to show him how to use equipment, keep an eye on him, and give him some advice, but he won't get a very realistic gym experience.