dream trip Peru Bolivia (3 weeks in May)

A couple of thoughts on timing (I'm not going to get into the overall itinerary):

How do you plan to get from Quellomayo to La Paz? I can't see how you are going to do this in a day, taking into account the border crossing.

Similarly how do you plan to travel from "Sud Lipez, ideally also Tupiza and Atacama desert"? If you end up in San Pedro de Atacama then get to Antofagasta and fly to Lima then I guess it's doable.
1 night stop in Lima
4 nights in Mancora

I assume you also plan to fly from LIM to TYL to go to Mancora?

Hi, thanks,
I was thinking flying from Uyuni to La Paz and Lima, then go to Mancora the morning after.

OK that will work assuming no flight delays. So you will return to Uyuni and not Tupiza or San Pedro: in the time this makes sense.

How about Quellomayo to La Paz?

Hi,
From Quellomayo i was thinking... well a car I guess (not sure if it's super expensive to have a 'taxi' for 4 hours) up to Cusco then fly. I didn't think about the border formalities thought so will take into account.
Yes for the Sud Lipez, I see a lot of 4 day tour with 3 nights in Uyuni/Sud Lipez, i see you have the option to cross the border but I am not sure if it's worth actually spending 1 night there, and if this can be part of these packaged tours. The option of flying from there is interesting!
Tupiza i read that weather is nicer so wanted to fit it if possible but i guess I am too tight

The taxi from Quellomayo to Ollantaytambo will not be that expensive really, however it will be a long tiring trip, then either keep the same taxi, get another one, or ride the 'bus, to Cuzco; then fly to La Paz. This is a long day but feasible.

Land transport will be around 24 hours travel, unless you have your own vehicle in which case it's still 18 hours or so at a guess.

Cusco/Sacred Valley/MP: you might want to go to Ollantaytambo first (lower in elevation than Cusco and a nice town... don't miss the ruins) and then MP (you don't need two nights in Aguas Calientes) and then Cusco. Quellomayo: only you can decide about going there. You could walk from Aguas Calientes to Hidroelectrica and take a shared taxi or minibus to Santa Teresa. From Santa Teresa you can take a minibus to Santa Maria and a bus to Cusco. Would it not make sense to then go to Puno and Lake Titicaca/Isla del Sol first? I have not been to Bolivia yet (going in March) but it seems like you need more time for La Paz. I would skip Mancora if it were my trip (long way to go for a beach... and Peru is really not about the beach).

Yes, going Quellomayo to La Paz would take 2 days. I haven't been to Quellomayo, but I'm sure even if you have taxi transport it's at least 5 hours time to reach Cusco. And the fast direct flights between Cusco and La Paz only leave during the morning hours. Maybe you should just spend your time in Corioco to avoid this problem. The las Yungas region is really beautiful.

But if you fly to La Paz from Cusco, that doesn't get you to lake Titicaca along the way, so maybe that's the flaw in your plan? Bus or train/bus transport between Cusco and Copacabana (for Isla del Sol) would take 2 days time via Puno.

2 nights ISLA DEL SOL: is 1 enough?

1 night on the island is enough for almost anyone. But it's impossible to do the visit without spending at least one night in Copacabana, either on your way to or from the island.

Thanks very much for your reply. Yes Quellomayo sounded nice but really not on the way... Coroico seems more sensible. Train to titicaca would be nice, and a way to avoid another flight. I'll add Copacabana too. Have you had a beach stay somewhere or not at all?