Since you were a bit ugly in your e-mail, it wouldn't hurt to send an e-mail in about a week or so, very nice and cordial. Mention something good in your life, be short and ask how he is doing.

If you get an e-mail response great. Continue visiiting. If you don't, consider this a dead-in street.

Even if you become e-mial friends, don't expect more than that. Don't plan your future around this guy unless a lot more develop on his part.

Since more went on than just a little nice talk in the hotel room, I wouldn't delete the account in case of, horrors, you needed to contact him regarding something you contracted from him or you may have given him. Surprises do happen.