Learn English – I’d like to ask how much money I have to pay for the swimming pool in the hotel

In casual conversation, you don't need a complete grammatical sentence. I'd be inclined to shorten it like this:

Same one as last time.

There are a number of similar variations that might slip out as well:

Same hotel as last visit.
The same place as last time.
Some one I stayed at before.
I'm staying where I did before.

Option 1 (using “had”) seems very unlikely to me. The situation it describes is that you currently feel that you previously experienced and previously completed knowing. It’s made even more unlikely by the reference frame “all my life”, which is not a previously completed period for anyone speaking!

Option 2 (using “have”) places the knowing in the continuous mood, meaning it started in the past (near beginning of the speaker’s life in this case) and continues through the present.

Option 2 is appropriate for both scenarios.

In the first case (conveying automatic comfort with someone), “feel as if I have” conveys the irrealis mood to the (untrue) fact of knowing this person your entire life.

In the second case (providing qualitative impression of relationship length), “feel as if I have” is again appropriate, because it is not strictly true that you have known this person your entire life. It feels that way because it is nearly that span of time (and because before you knew them you didn’t know much of anything else anyway), but irrealis is appropriate again (for a slightly different reason).