8 Flats, 1 Finca. Great Deal.
Sometimes , rarely, a well priced apartment complex comes up for sale and you are able to get a whole building for a decent price. This of course means you don't have issues with licences for tourist rentals, usage for business purposes or even conversion into an enormous place for yourself (Or knocking a couple of flats together if you so wish.
Also a huge advantage is that you get a discount for buying them all at the same time and then you get to choose which part of the property you may want to keep whereas you can sell the others at market value. Individually these apartments would be priced between 130-155k but you can get all 8 of them, all with small terraces to the rear (Larger ones in the case of the two ground floor flats) for just 100k each, however you have to buy all eight together to get this price.
Effectively it's an investor's wet dream, a whole building at a decent price in the bohemian and ultra trendy area of Ruzafa with excellent rental opportunities if you want to do short term rentals and it also just happens to be one of the best places to live in Valencia. Apart from all of that there is another great advantage, the building is actually quite a handsome one.
Take a look at the photos and get in touch but just to answer your initial questions: 1) No, you cannot buy them individually. 2) Maybe 3) Yes, they would work well as part of a portfolio and give over 5% net returns even if just doing simple long term rentals. (The second answer refers to your question of whether the price can be negotiate